Emperor Yang of Sui
Encyclopedia
Emperor Yang of Sui personal name Yang Guang (楊廣), alternative name Ying (英), nickname Amo (阿摩), known as Emperor Ming (明帝) during the brief reign of his grandson Yang Tong
Yang Tong
Yang Tong , known in traditional histories by his princely title of Prince of Yue or by his era name as Lord Huangtai , posthumous name Emperor Gong , courtesy name Renjin , was an emperor of the Chinese Sui Dynasty...

), was the second son of Emperor Wen of Sui
Emperor Wen of Sui
Emperor Wen of Sui — personal name Yang Jian , Xianbei name Puliuru Jian , nickname Naluoyan — was the founder and first emperor of China's Sui Dynasty . He was a hard-working administrator and a micromanager. As a Buddhist, he encouraged the spread of Buddhism through the state...

, and the second emperor of China's Sui Dynasty
Sui Dynasty
The Sui Dynasty was a powerful, but short-lived Imperial Chinese dynasty. Preceded by the Southern and Northern Dynasties, it ended nearly four centuries of division between rival regimes. It was followed by the Tang Dynasty....

.

Emperor Yang's original name was Yang Ying, but was renamed by his father, after consulting with oracles, to Yang Guang. Yang Guang was made the Prince of Jin after Emperor Wen established Sui Dynasty in 581. In 588 he was put in charge of the overall command of the five armies that invaded the southern Chen Dynasty
Chen Dynasty
The Chen Dynasty , also known as the Southern Chen Dynasty, was the fourth and last of the Southern dynasties in China, eventually destroyed by the Sui Dynasty....

, and was widely praised for the success of this campaign. These military achievements, as well as his machinations in finding faults with his older brother Yang Yong
Yang Yong
Emperor Yang Yong , nickname Xiandifa , sometimes known by his posthumous title of Prince of Fangling , was a crown prince of the Chinese dynasty Sui Dynasty. He was the oldest son of Emperor Wen and his wife Empress Dugu Qieluo...

, allowed him to become crown prince
Crown Prince
A crown prince or crown princess is the heir or heiress apparent to the throne in a royal or imperial monarchy. The wife of a crown prince is also titled crown princess....

 in 600 after Emperor Wen believed in the accusations against Yang Yong. After the death of his father in 604—a death that most traditional historians believed to be a murder ordered by Yang Guang, although they admit a lack of direct evidence—Yang Guang ascended the throne as Emperor Yang.

Emperor Yang, ruling from 606 to 618, committed to several large construction projects during his rule, most notably the completion of the Grand Canal
Grand Canal of China
The Grand Canal in China, also known as the Beijing-Hangzhou Grand Canal is the longest canal or artificial river in the world. Starting at Beijing, it passes through Tianjin and the provinces of Hebei, Shandong, Jiangsu and Zhejiang to the city of Hangzhou...

. He caused the reconstruction of the Great Wall
Great Wall of China
The Great Wall of China is a series of stone and earthen fortifications in northern China, built originally to protect the northern borders of the Chinese Empire against intrusions by various nomadic groups...

, a project which took the lives of nearly six million workers. He also ordered several military expeditions that brought Sui to its greatest territorial extent, one of which, the conquest of Champa
Champa
The kingdom of Champa was an Indianized kingdom that controlled what is now southern and central Vietnam from approximately the 7th century through to 1832.The Cham people are remnants...

 in what is now central and southern Vietnam
Vietnam
Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...

, caused death of thousands of Sui soldiers through malaria. These expeditures, along with a series of disastrous campaigns
Goguryeo-Sui Wars
The Goguryeo–Sui Wars were a series of campaigns launched by the Sui Dynasty of China against the Goguryeo of Korea between 598 and 614. It resulted in the defeat of Sui and contributed to the eventual downfall of the dynasty in 618.-Background:...

 against Goguryeo
Goguryeo
Goguryeo or Koguryŏ was an ancient Korean kingdom located in present day northern and central parts of the Korean Peninsula, southern Manchuria, and southern Russian Maritime province....

 (one of the three kingdoms of Korea
Korea
Korea ) is an East Asian geographic region that is currently divided into two separate sovereign states — North Korea and South Korea. Located on the Korean Peninsula, Korea is bordered by the People's Republic of China to the northwest, Russia to the northeast, and is separated from Japan to the...

), left the empire bankrupt and the people in revolt. With northern China in turmoil, Emperor Yang spent his last days in Jiangdu (江都, in modern Yangzhou
Yangzhou
Yangzhou is a prefecture-level city in central Jiangsu Province, People's Republic of China. Sitting on the northern bank of the Yangtze River, it borders the provincial capital of Nanjing to the southwest, Huai'an to the north, Yancheng to the northeast, Taizhou to the east, and Zhenjiang across...

, Jiangsu
Jiangsu
' is a province of the People's Republic of China, located along the east coast of the country. The name comes from jiang, short for the city of Jiangning , and su, for the city of Suzhou. The abbreviation for this province is "苏" , the second character of its name...

), where he was eventually strangled in a coup led by his general Yuwen Huaji
Yuwen Huaji
Yuwen Huaji was a general of the Chinese dynasty Sui Dynasty who, in 618, led a coup against Emperor Yang of Sui, killing him. He subsequently declared Emperor Yang's nephew Yang Hao led Emperor Yang's elite Xiaoguo Army north, but was then repeatedly defeated by Li Mi, Li Shentong , and...

.

Emperor Yang committed almost eight million people to constructing roads, palaces, the Grand Canal, the Great Wall and ships. The re-designing of Luoyang
Luoyang
Luoyang is a prefecture-level city in western Henan province of Central China. It borders the provincial capital of Zhengzhou to the east, Pingdingshan to the southeast, Nanyang to the south, Sanmenxia to the west, Jiyuan to the north, and Jiaozuo to the northeast.Situated on the central plain of...

, designated as the eastern capital, alone consumed a quarter of that amount, and the building of the Grand Canal took up 2 million men. Equally manpower-consuming were the three expeditions against Goguryeo, each one needing about a million men.

Despite his accomplishments, Emperor Yang was generally considered by traditional historians to be one of the worst tyrants in Chinese history and the reason for the Sui Dynasty's relatively short rule.

Background

Yang Guang was born in 569, during the reign of Emperor Wu of Northern Zhou
Emperor Wu of Northern Zhou
Emperor Wu of Northern Zhou , personal name Yuwen Yong , nickname Miluotu , was an emperor of the Chinese/Xianbei dynasty Northern Zhou. As was the case of the reigns of his brothers Emperor Xiaomin and Emperor Ming, the early part of his reign was dominated by his cousin Yuwen Hu, but in 572 he...

. His parents were Yang Jian
Emperor Wen of Sui
Emperor Wen of Sui — personal name Yang Jian , Xianbei name Puliuru Jian , nickname Naluoyan — was the founder and first emperor of China's Sui Dynasty . He was a hard-working administrator and a micromanager. As a Buddhist, he encouraged the spread of Buddhism through the state...

 the Duke of Sui and Yang Jian's wife Duchess Dugu Qieluo
Empress Dugu Qieluo
Empress Dugu Qieluo , formally Empress Wenxian , was an empress of the Chinese dynasty Sui Dynasty...

. He was their second son, after Yang Yong
Yang Yong
Emperor Yang Yong , nickname Xiandifa , sometimes known by his posthumous title of Prince of Fangling , was a crown prince of the Chinese dynasty Sui Dynasty. He was the oldest son of Emperor Wen and his wife Empress Dugu Qieluo...

, and he had at least one older sister, Yang Lihua
Empress Yang Lihua
Empress Yang Lihua was an empress of the Chinese/Xianbei dynasty Northern Zhou, and later a princess of Sui Dynasty. Her husband was Emperor Xuan of Northern Zhou , and her father was Emperor Wen of Sui ....

, who became the wife of Emperor Wu's crown prince
Crown Prince
A crown prince or crown princess is the heir or heiress apparent to the throne in a royal or imperial monarchy. The wife of a crown prince is also titled crown princess....

 Yuwen Yun
Emperor Xuan of Northern Zhou
Emperor Xuan of Northern Zhou , personal name Yuwen Yun , courtesy name Qianbo , was an emperor of the Chinese/Xianbei dynasty Northern Zhou. He was known in history as an erratic and wasteful ruler, whose actions greatly weakened the Northern Zhou regime...

 (the later Emperor Xuan) in 573. He was considered handsome and intelligent in his youth, and of Yang Jian's and Duchess Dugu's sons, they favored him the most. Sometime during Northern Zhou
Northern Zhou
The Northern Zhou Dynasty followed the Western Wei, and ruled northern China from 557 to 581. It was overthrown by the Sui Dynasty.Northern Zhou's basis of power was established by Yuwen Tai, who was paramount general of Western Wei, following the split of Northern Wei into Western Wei and...

, on account of Yang Jian's achievements, he was created the Duke of Yanmen.

In 580, Yang Jian seized power as regent after Emperor Xuan's death. In 581, he had Emperor Xuan's son (by the concubine Empress Zhu Manyue
Empress Zhu Manyue
Empress Zhu Manyue , later Buddhist nun name Fajing , was a concubine of Emperor Xuan of Northern Zhou , an emperor of the Chinese/Xianbei dynasty Northern Zhou, and she was the mother of Emperor Jing ....

), Emperor Jing
Emperor Jing of Northern Zhou
Emperor Jing of Northern Zhou , personally name né Yuwen Yan , later Yuwen Chan , was the last emperor of the Chinese/Xianbei dynasty Northern Zhou. He became emperor at the age of six, after his father Emperor Xuan formally passed the throne to him, but Emperor Xuan retained the imperial powers...

, yield the throne to him, ending Northern Zhou and establishing Sui Dynasty
Sui Dynasty
The Sui Dynasty was a powerful, but short-lived Imperial Chinese dynasty. Preceded by the Southern and Northern Dynasties, it ended nearly four centuries of division between rival regimes. It was followed by the Tang Dynasty....

 as its Emperor Wen. Emperor Wen created Yang Yong crown prince and created his other sons imperial princes. Yang Guang thus received the title of Prince of Jin.

As Prince of Jin

Also in 581, Emperor Wen made Yang Guang the commandant at Bing Province (并州, roughly modern Taiyuan
Taiyuan
Taiyuan is the capital and largest city of Shanxi province in North China. At the 2010 census, it had a total population of 4,201,591 inhabitants on 6959 km² whom 3,212,500 are urban on 1,460 km². The name of the city literally means "Great Plains", referring to the location where the Fen River...

, Shanxi
Shanxi
' is a province in Northern China. Its one-character abbreviation is "晋" , after the state of Jin that existed here during the Spring and Autumn Period....

), in charge of the provinces north of the Yellow River
Yellow River
The Yellow River or Huang He, formerly known as the Hwang Ho, is the second-longest river in China and the sixth-longest in the world at the estimated length of . Originating in the Bayan Har Mountains in Qinghai Province in western China, it flows through nine provinces of China and empties into...

. In 582, Emperor Wen set up a branch of the executive bureau of his government (尚書省, Shangshu Sheng) at Bing Province and made Yang Guang its head. He made the official Wang Shao (王韶) the deputy head and had him assist Yang Guang. Later in 582, Emperor Wen took a daughter
Empress Xiao (Yang)
Empress Xiao , formally Empress Min , was an empress of the Chinese Sui Dynasty...

 of his vassal Emperor Ming of Western Liang
Emperor Ming of Western Liang
Emperor Ming of Western Liang , personal name Xiao Kui , courtesy name Renyuan , was a emperor of the Chinese Liang Dynasty...

 (Xiao Kui) to be Yang Guang's wife and princess. It was said that Yang Guang loved and respected her.

In 584, after some Sui military and diplomatic victories, Tujue's Shabolüe Khan
Shetu Khan
Ishbara Qaghan was the first son of Issik Qaghan, grandson of Bumin Qaghan, and the fifth khagan of the first...

 Ashina Shetu submitted to Sui. Yang Guang suggested to Emperor Wen that he rejected Ashina Shetu's overture and launch a major attack on Tujue, but Emperor Wen refused. In 585, with Ashina Shetu under attack from one of his subordinate khans, the Datou Khan Ashina Dianjue, Emperor Wen in fact sent Yang Guang to aid Ashina Shetu.

In 588, Emperor Wen moved Yang Guang's headquarters to Shouchun (壽春, in modern Lu'an
Lu'an
Lu'an , is a prefecture-level city in western Anhui Province, People's Republic of China, with a population of 5,612,590 inhabitants at 2010 census. Its built up area is home to 1,482,729 inhabitants spread out on 2 urban districts...

, Anhui
Anhui
Anhui is a province in the People's Republic of China. Located in eastern China across the basins of the Yangtze River and the Huai River, it borders Jiangsu to the east, Zhejiang to the southeast, Jiangxi to the south, Hubei to the southwest, Henan to the northwest, and Shandong for a tiny...

), and made him the commandant there as well as the head the branch of the executive bureau established there. In winter 588, Emperor Wen launched a major attack on rival Chen Dynasty
Chen Dynasty
The Chen Dynasty , also known as the Southern Chen Dynasty, was the fourth and last of the Southern dynasties in China, eventually destroyed by the Sui Dynasty....

. Yang Guang, his brother Yang Jun
Yang Jun (Sui Dynasty)
Yang Jun , nickname Azhi , formally Prince Xiao of Qin , was an imperial prince of the Chinese dynasty Sui Dynasty. He was a son of Emperor Wen and his wife Empress Dugu Qieluo, who died as a result of an illness caused by poisoning by his jealous wife Princess Cui...

, and the general Yang Su
Yang Su
Yang Su , courtesy name Chudao , formally Duke Jingwu of Chu , was a powerful general during Sui Dynasty whose authority eventually became nearly as supreme as the emperor's...

 were in command of the three main prongs of the operation, with Yang Guang in command of the eastern prong as well as the overall operation. The key official Gao Jiong
Gao Jiong
Gāo Jiǒng Gāo Jiǒng Gāo Jiǒng (d. August 27, 607 courtesy name Zhaoxuan (昭玄), alternative name Min (敏), known during the Northern Zhou period by the Xianbei name Dugu Jiong (独孤颎/獨孤熲), was a key official and general of the Chinese Sui Dynasty...

 served as Yang Guang's assistant. In spring 589, the generals Han Qinhu (韓擒虎) and Heruo Bi (賀若弼), both under Yang Guang, crossed the Yangtze River
Yangtze River
The Yangtze, Yangzi or Cháng Jiāng is the longest river in Asia, and the third-longest in the world. It flows for from the glaciers on the Tibetan Plateau in Qinghai eastward across southwest, central and eastern China before emptying into the East China Sea at Shanghai. It is also one of the...

 and approached the Chen capital Jiankang
Jiankang
Jiankang was the capital city of the Eastern Jin Dynasty and Southern Dynasties. Its walls are extant ruins in the modern municipal region of Nanjing.-History:...

. Soon, after Heruo defeated the Chen general Xiao Mohe
Xiao Mohe
Xiao Mohe , courtesy name Yuanyin , was a general of the Chinese dynasties Chen Dynasty and Sui Dynasty. He initially served in the military in the late Liang Dynasty, and gradually grew in stature and fame during the reigns of each of the emperors of Chen...

, Jiankang fell, and the Chen emperor Chen Shubao
Chen Shubao
Chen Shubao , often known in history as Houzhu of Chen , posthumous name Duke Yang of Changcheng , courtesy name Yuanxiu , nickname Huangnu , was the last emperor of the Chinese Chen Dynasty...

 was captured. Yang Guang, apparently fascinated by Chen Shubao's favorite concubine Consort Zhang Lihua
Consort Zhang Lihua
Consort Zhang Lihua was an imperial consort of the Chinese dynasty Chen Dynasty. She was the favorite concubine of Chen's final emperor, Chen Shubao....

, sent Gao Jiong's son Gao Dehong (高德弘) to order Gao Jiong to hold Consort Zhang. Instead, Gao Jiong, comparing Consort Zhang to Daji
Daji
Daji was a favorite concubine of King Zhou of Shang, the last king of the Shang Dynasty in ancient China. She is a classic example of how a beauty causes the downfall of an empire/dynasty in Chinese culture...

 (the wicked wife of King Zhou of Shang
King Zhou of Shang
Emperor Xin of Shang was the last king of the Shang Dynasty. He was later given the pejorative posthumous name Zhòu . He is also called Zhou Xin or King Zhou . He may also be referred to by adding "Shang" in front of any of his names...

), beheaded her. Yang Guang thereafter resented Gao greatly, stating sarcastically, "It has been said, 'You should repay every good deed done to you.' I will repay Duke Gao later." By Yang Guang's orders, several of Chen Shubao's favorite officials, who were considered reasons for Chen's downfall, including Shi Wenqing (施文慶), Shen Keqing (沈客卿), Yang Huilang (陽慧朗), Xu Xi (徐析), and Ji Huijing (暨慧景), were executed. It was said that the people praised Yang Guang for his actions. Chen Shubao and his own clan members, however, were treated with kindness, and at Yang Guang's request, Chen Shubao sent letters to Chen generals who had not yet surrendered to persuade them to do so, and they largely did. Later that year, Yang Guang's forces escorted them to the capital Chang'an
Chang'an
Chang'an is an ancient capital of more than ten dynasties in Chinese history, today known as Xi'an. Chang'an literally means "Perpetual Peace" in Classical Chinese. During the short-lived Xin Dynasty, the city was renamed "Constant Peace" ; yet after its fall in AD 23, the old name was restored...

. At the ceremony to present Chen Shubao to Emperor Wen, Yang Guang marched into the palace first, and Emperor Wen bestowed on Yang Guang decorated wagons, horses, clothing, and jade. Afterwards, Yang Jun was given the Yang Province (then moved to modern Yangzhou
Yangzhou
Yangzhou is a prefecture-level city in central Jiangsu Province, People's Republic of China. Sitting on the northern bank of the Yangtze River, it borders the provincial capital of Nanjing to the southwest, Huai'an to the north, Yancheng to the northeast, Taizhou to the east, and Zhenjiang across...

, Jiangsu
Jiangsu
' is a province of the People's Republic of China, located along the east coast of the country. The name comes from jiang, short for the city of Jiangning , and su, for the city of Suzhou. The abbreviation for this province is "苏" , the second character of its name...

) commandant post, and Yang Guang was returned to Bing Province. In 590, Emperor Wen swapped the defense posts of Yang Jun and Yang Guang, returning Yang Guang to Yang Province.

In 594, Yang Guang urged Emperor Wen to offer sacrifices to Mount Tai
Mount Tai
Mount Tai is a mountain of historical and cultural significance located north of the city of Tai'an, in Shandong province, People's Republic of China. The tallest peak is the Jade Emperor Peak , which is commonly reported as tall, but is described by the PRC government as .Mount Tai is one of the...

 -- a traditional ceremony for emperors, but one that was rarely carried out. Emperor Wen rejected the elaborate traditional ceremonies, but did carry out a reduced ceremony at Mount Tai.

In spring 600, with Ashina Dianjue, who had by now become Tujue's khan, attacking the borders, Emperor Wen sent Yang Guang, Yang Su the Duke of Yue, Yang Guang's brother Yang Liang
Yang Liang
Yang Liang -- courtesy name Dezhang , alternative name Jie , nickname Yiqian -- was an imperial prince of the Chinese dynasty Sui Dynasty. He was a son of Emperor Wen and his wife Empress Dugu Qieluo, who, during his father's reign, controlled the region north of the Yellow River...

 the Prince of Han, and Shi Wansui (史萬歲) the Duke of Taiping, against Tujue, and they were largely successful against Ashina Dianjue, protecting the Qimin Khan
Qimin Khan
Yаmi Qaghan, personal name: Ashina Jankan , at one point known as Tolis Qaghan and after Yаmi Qaghan(Old Turkic: , Jаmï qaγan, Chinese: 啓民可汗, 啟民可汗/启民可汗, Modern Chinese: (Pinyin): qǐmín kěhàn, (Wade-Giles): ch'i-min k'o-han, Middle Chinese: (Guangyun) ), personal name: Ashina Jankan (阿史那染幹/阿史那染干,...

 Ashina Rangan, whom Sui supported, from Ashina Dianjue's attack.

By 600, Yang Guang's older brother Yang Yong had lost the favors of Emperor Wen and Empress Dugu—over his wastefulness (which displeased Emperor Wen) and his having many concubines (which displeased Empress Dugu). Yang Guang, by contrast, pretended to be frugal and loving only Princess Xiao. (It was written that Yang Guang did have concubines, but he pretended that he did not, and that he forced his concubines to have abortions if they became pregnant.) Yang Guang further inflamed Empress Dugu by informing her that she believed that Yang Yong was determined to kill him eventually. Empress Yang thus resolved to remove Yang Yong. Yang Guang further had his associate Yuwen Shu
Yuwen Shu
Yuwen Shu , courtesy name Botong , formally Duke Gong of Xu , was an official and general of the Chinese dynasty Sui Dynasty...

 persuade Yang Su's brother Yang Yue (楊約) that, because Yang Su's relationship with Yang Yong was not good, that their family would be in peril should Yang Yong succeed Emperor Wen. Finally, Yang Guang also had Yang Yong's associate Ji Wei (姬威) accuse Yang Yong of plotting treason. Emperor Wen had Yang Su investigate, and Yang Guang and Yang Su manufactured evidence against Yang Yong. Emperor Wen deposed Yang Yong and replaced him with Yang Guang, putting Yang Yong under house arrest under Yang Guang's watch. Yang Guang later prevented Yang Yong from all attempts of seeing his parents again.

As crown prince

It is widely believed that Yang Guang also continued to scheme to secure his status as the crown prince. Such commonly believed tales include the followings.

By 602, His brother, Yang Xiu
Yang Xiu (Sui Dynasty)
Yang Xiu was an imperial prince of the Chinese dynasty Sui Dynasty. He was a son of Emperor Wen and his wife Empress Dugu Qieluo, and during most of his father's reign was given great control over the modern Sichuan and Chongqing region...

 the Prince of Shu, who, was commandant of Yi Province (益州, roughly modern Chengdu
Chengdu
Chengdu , formerly transliterated Chengtu, is the capital of Sichuan province in Southwest China. It holds sub-provincial administrative status...

, Sichuan
Sichuan
' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...

), and had great resources at his disposal. Yang Guang collected evidence of Yang Xiu's wrongdoing, particularly wastefulness, and had Yang Su submit them to Emperor Wen. Emperor Wen summoned Yang Xiu back to the capital and had Yang Su investigate, and both Yang Guang and Yang Su further manufactured evidence against Yang Xiu. Emperor Wen reduced Yang Xiu to commoner rank and put him under house arrest.

Also in 602, Empress Dugu died. It was said that Yang Guang pretended to mourn greatly, refusing most foods, but in private continued to dine normally.

In 604, while Emperor Wen was at his vacation palace Renshou Palace (仁壽宮, in modern Baoji
Baoji
Baoji is a prefecture-level city in Shaanxi province, China.-Geography:The prefecture-level city of Baoji has a population of 3,716,731 according to the 2010 Chinese census, inhabiting an area of . The city itself has a population of approximately 800,000. Surrounded on three sides by hills,...

, Shaanxi
Shaanxi
' is a province in the central part of Mainland China, and it includes portions of the Loess Plateau on the middle reaches of the Yellow River in addition to the Qinling Mountains across the southern part of this province...

), he fell ill and then died—a death, however, that traditional historians, while admitting a lack of direct evidence, believed to be a murder ordered by Yang Guang (see below). Yang Guang, after sending Yang Yue to kill Yang Yong, announced Emperor Wen's death and took the throne as Emperor Yang.

Early reign

An immediate challenge that Emperor Yang faced was a rebellion by his brother Yang Liang, then the commandant at Bing Province, who was encouraged by the generals Wang Kui (王頍) and Xiao Mohe
Xiao Mohe
Xiao Mohe , courtesy name Yuanyin , was a general of the Chinese dynasties Chen Dynasty and Sui Dynasty. He initially served in the military in the late Liang Dynasty, and gradually grew in stature and fame during the reigns of each of the emperors of Chen...

. Yang Liang received support from 19 provinces, but lacked a coherent plan as to whether to try to challenge Emperor Yang for the control of the entire empire, or just the region north of the Yellow River
Yellow River
The Yellow River or Huang He, formerly known as the Hwang Ho, is the second-longest river in China and the sixth-longest in the world at the estimated length of . Originating in the Bayan Har Mountains in Qinghai Province in western China, it flows through nine provinces of China and empties into...

. After some initial successes, Yang Liang's offenses stalled. Emperor Yang sent Yang Su against him, and Yang Su proceeded quickly to Yang Liang's headquarters at Bing Province, capturing Xiao and forcing Yang Liang to surrender. Emperor Yang did not execute Yang Liang, but reduced him to commoner rank and imprisoned him for the rest of his life.

In winter 604, believing in the words of the sorcerer Zhangchou Taiyi (章仇太翼) that the geography of Chang'an was not conducive to his health, Emperor Yang went to Luoyang
Luoyang
Luoyang is a prefecture-level city in western Henan province of Central China. It borders the provincial capital of Zhengzhou to the east, Pingdingshan to the southeast, Nanyang to the south, Sanmenxia to the west, Jiyuan to the north, and Jiaozuo to the northeast.Situated on the central plain of...

, designating it as the eastern capital, and would rarely return to Chang'an thereafter, although Chang'an remained official the main capital. He ordered that major construction projects be carried out at Luoyang, commensurate with the necessities of having it as the second capital, and he left his oldest son, Yang Zhao
Yang Zhao
Yang Zhao , formally Crown Prince Yuande , posthumously honored as Emperor Xiaocheng with the temple name Shizong during the brief reign of his son Yang Tong, was a crown prince of the Chinese dynasty Sui Dynasty...

 the Prince of Jin, in charge of Chang'an. He conscripted several hundred thousands of young men to dig a lengthy trench to surround the Luoyang region, intending that it serve as a defense perimeter. He also ordered that women and servants be exempted from head taxes, and that men would only be considered adults (i.e., subject to conscription) when they turn 21.

In spring 605, Emperor Yang created his wife Crown Princess Xiao empress, and Yang Zhao crown prince. He also abolished the offices of military commandants. He, at this time, trusted Empress Xiao's brother Xiao Cong
Emperor Jing of Western Liang
Emperor Jing of Western Liang , personal name Xiao Cong , courtesy name Wenwen , known during Sui Dynasty as the Duke of Ju then Duke of Liang , was the final emperor of the Chinese Liang Dynasty...

 the Duke of Ju (Western Liang's last emperor) and made him, as well as many of her other relatives, important officials, creating him the greater title of Duke of Liang.

Starting in 605, Emperor Yang also started a massive number of construction projects—including the building of the imperial palace at Luoyang, described to be particularly luxurious. Further, he conscripted a large number of men to build the Tongji Canal (通濟渠), connecting Luoyang with the Yellow River and connecting the Yellow River with the Huai River
Huai River
The Huai River is a major river in China. The Huai River is located about mid-way between the Yellow River and Yangtze River, the two largest rivers in China, and like them runs from west to east...

, as well as to rebuild the Han Canal (邗溝), connecting the Huai River and the Yangtze River. The two canals, which would eventually become parts of the Grand Canal of China
Grand Canal of China
The Grand Canal in China, also known as the Beijing-Hangzhou Grand Canal is the longest canal or artificial river in the world. Starting at Beijing, it passes through Tianjin and the provinces of Hebei, Shandong, Jiangsu and Zhejiang to the city of Hangzhou...

, were said to be constructed within five months, but at substantial cost of life—40% to 50% of the men employed. Emperor Yang also ordered that some 40 secondary palaces be built around the empire, so that he could visit the various provinces, arguing that he needed to do so to see the conditions of the empire so that he could govern effectively.

In fall 605, after the completion of the Tongji and Han Canals, Emperor Yang carried out the first of 11 (counting military campaigns) tours that he would eventually undertake of various parts of the empire, going to Jiangdu—the capital of Yang Province, where he had been commandant previously—on an imperial ship that was said to be sufficiently large and luxurious to serve as floating palaces.

Also in 605, when Khitan
Khitan people
thumb|250px|Khitans [[Eagle hunting|using eagles to hunt]], painted during the Chinese [[Song Dynasty]].The Khitan people , or Khitai, Kitan, or Kidan, were a nomadic Mongolic people, originally located at Mongolia and Manchuria from the 4th century...

 tribes attacked Ying Province (營州, roughly modern Zhaoyang, Liaoning
Liaoning
' is a province of the People's Republic of China, located in the northeast of the country. Its one-character abbreviation is "辽" , a name taken from the Liao River that flows through the province. "Níng" means "peace"...

), Emperor Yang had the official Wei Yunqi (韋雲起) requisition Tujue troops under Ashina Rangan to attack Khitan. The Khitan forces were caught by surprise and defeated.

In summer 606, Yang Zhao the Crown Prince became ill while visiting Luoyang, and soon died. Emperor Yang would not create another crown prince for the rest of his reign, creating Yang Zhao's sons Yang Tan (楊倓), Yang Tong
Yang Tong
Yang Tong , known in traditional histories by his princely title of Prince of Yue or by his era name as Lord Huangtai , posthumous name Emperor Gong , courtesy name Renjin , was an emperor of the Chinese Sui Dynasty...

, and Yang You
Emperor Gong of Sui
Emperor Gong of Sui , personal name Yang You , was an emperor of the Chinese Sui Dynasty. Traditionally, he was considered the last emperor of the dynasty because he was the one who formally yielded the throne to the founding emperor to the succeeding Tang Dynasty, Emperor Gaozu of Tang ,...

 imperial princes, while initially apparently tacitly considering his second son, Yang Jian the Prince of Qi (note different character than Emperor Wen) the de facto successor, leaving Yang Jian in charge of Luoyang whenever he would be away from Luoyang. Yang Su, whom Emperor Yang pretended to respect but actually feared, also died in summer 606.

Also in 606, Emperor Yang ordered that two massive food storages—the Luokou Storage (洛口倉) and the Huiluo Storage (回洛倉) -- be constructed near Luoyang.

In spring 607, Ashina Rangan visited Emperor Yang at Luoyang. Also in spring 607, at the instigation of Yuwen Shu, Emperor Yang had Yang Yong's eight sons put to death.

In summer 607, Emperor Yang abolished provinces and changed them to commanderies. At the same time, he reorganized his father's governmental system of having five main bureaus, keeping four of the main bureaus—the executive bureau (尚書省, Shangshu Sheng), the examination bureau (門下省, Menxia Sheng), the legislative bureau (內史省, Neishi Sheng), the archival bureau (秘書省, Mishu Sheng) -- while abolishing the eunuch bureau and replacing it with the palace bureau (殿內省, Diannei Sheng). He established three additional independent agencies and five independent departments. He also organized the imperial army into 16 corps. He abolished three levels of noble titles—the counts, the viscounts, and the barons—keeping only the princes, the dukes, and the marquesses.

Also in summer 607, Emperor Yang embarked on a tour of the northern provinces, building an imperial highway from Chang'an to Jinyang (晉陽, the capital of Bing Province). He then personally visited the imperial tent of Ashina Rangan, whose display of submission and loyalty caused Emperor Yang to bestow much honor and wealth on him. When the senior officials Gao Jiong, Yuwen Bi (宇文弼), and Heruo Bi privately expressed disapproval, Emperor Yang discovered their criticism and put all of them to death, while removing Su Wei
Su Wei
Su Wei , courtesy name Wuwei , was a high level official of the Chinese dynasty Sui Dynasty. He first became an important official during the reign of Sui's founder Emperor Wen, and after Emperor Wen's death continued to serve Emperor Wen's son Emperor Yang. He was often praised for his...

, who also discouraged him from giving excessive rewards to Ashina Rangan, from his post. (Traditional historians attribute Gao's death to Gao's refusal to keep Chen Shubao's Consort Zhang alive in 589.) As Xiao Cong had a deep friendship with Heruo Bi, and there had been rumors that the Xiaos would rise again, the superstitious Emperor Yang also removed Xiao Cong from his post.

Also in 607, at the instigation of Pei Ju
Pei Ju
Pei Ju , courtesy name Hongda , formally Duke Jing of Anyi , was a high level official during the Chinese dynasties Sui Dynasty and Tang Dynasty, briefly serving as a chancellor during the reign of Emperor Gaozu of Tang...

, Emperor Yang reopened relations with Xiyu states.

In spring 608, Emperor Yang conscripted over a million men to construct the Yongji Canal (永濟渠), from the Yellow River to Zhuo Commandery (涿郡, roughly modern Beijing
Beijing
Beijing , also known as Peking , is the capital of the People's Republic of China and one of the most populous cities in the world, with a population of 19,612,368 as of 2010. The city is the country's political, cultural, and educational center, and home to the headquarters for most of China's...

). It was said that there were not enough men, and he started conscripting women as well.

In 608, after persuasion by the Sui official Cui Junsu (崔君肅), the Western Tujue khan (Ashina Rangan's western rival), the Heshana Khan
Heshana Khan
Heshana Khan , at one point known as Chuluo Khan and , personal name Ashina Daman , was a khan of the Western Turkic Khaganate...

 Ashina Daman, whose mother was Han
Han Chinese
Han Chinese are an ethnic group native to China and are the largest single ethnic group in the world.Han Chinese constitute about 92% of the population of the People's Republic of China , 98% of the population of the Republic of China , 78% of the population of Singapore, and about 20% of the...

, submitted to Sui as a vassal. However, also in 608, Emperor Yang received a letter claiming to be from the King of Japan, Duolisibigu (多利思比孤, now commonly believed to be Prince Shōtoku
Prince Shotoku
, also known as or , was a semi-legendary regent and a politician of the Asuka period in Japan who served under Empress Suiko. He was a son of Emperor Yōmei and his younger half-sister Princess Anahobe no Hashihito. His parents were relatives of the ruling Soga clan, and was involved in the defeat...

), stating, "The Son of Heaven
Son of Heaven
Son of Heaven may refer to:* Emperor of China* Emperor of Japan* Emperors of Vietnam* Son of God* Son of Heaven , book on Guangxu Emperor by Princess Der Ling...

 where the sun rises, to the Son of Heaven where the son sets, may good health be with you." Displeased by what he saw as insolence, he ordered that in the future, "insolent" letters from other states not be submitted to him.

Also in 608, initially over disputes over women (Yang Jian's having taken a concubine that Emperor Yang himself wanted) and hunting (Yang Jian's guards having been much more successful than Emperor Yang's guards at hunting), Emperor Yang's relationship with Yang Jian began to deteriorate. He ordered investigations into Yang Jian's violation of laws, and discovered that Yang Jian had used witchcraft to curse Yang Zhao's three sons. In anger, Emperor Yang executed and exiled a number of Yang Jian's associates, but he did not depose Yang Jian, although from this point on Yang Jian did not exert much influence on the political scene.

In 608 as well, Pei Ju persuaded the Tiele
Tiele people
The Tiele or Tele , were a confederation of nine Turkic peoples living to the north of China and in Central Asia, emerging after the disintegration of the Xiongnu confederacy...

 tribes to attack Tuyuhun, forcing Tuyuhun's Busabuo Khan Murong Fuyun
Murong Fuyun
Murong Fuyun , formal title Busabo Khan , was a ruler of the Xianbei/Qiang/Tibetan state Tuyuhun. He first became ruler when his brother Murong Shifu was assassinated in 597, and became one of the longest-ruling monarchs in Tuyuhun history...

 to flee. Murong Fuyun initially considered submitting to Sui, and Emperor Yang sent Yuwen with an army to welcome him. However, when Murong Fuyun changed his mind, Yuwen attacked him and seized much of Tuyuhun's people. When Murong Fuyun fled further, Emperor Yang had his forces seize Tuyuhun's territory, establishing four commanderies, to be populated with exiles.

Middle reign

In spring 609, Ashina Rangan made another visit to Emperor Yang, and Emperor Yang again rewarded him with much treasure.

Also in spring 609, Emperor Yang ordered a redistribution of the farming land throughout the empire.

Later in spring 609, Emperor Yang conducted a tour of the newly conquered Tuyuhun territory, and sent several generals to chase down Murong Fuyun. The Sui forces engaged Murong Fuyun's remaining forces, with mixed success, but Murong Fuyun was forced to flee to Dangxiang tribes. Emperor Yang tried to impose Murong Fuyun's son Murong Shun
Murong Shun
Murong Shun , regal title Zhugulüwugandou Khan or, in short, Gandou Khan , Tang Dynasty noble title Prince of Xiping , was briefly a khan of the Xianbei/Qiang/Tibetan state Tuyuhun...

, whom Murong Fuyun had earlier sent to Sui as a hostage, as Tuyuhun's new khan, but the Tuyuhun people would not accept him, and Murong Shun was forced back to Sui territory. Emperor Yang also received 27 rulers of Xiyu kingdoms in an audience at Zhangye (張掖, in modern Zhangye
Zhangye
-Administration:Zhangye has 1 urban district, 4 counties, 1 autonomous county, 97 towns, and 977 villages.-Demographics:Zhangye has a total population of 1,260,000, only 260,000 being urban residents...

, Gansu
Gansu
' is a province located in the northwest of the People's Republic of China.It lies between the Tibetan and Huangtu plateaus, and borders Mongolia, Inner Mongolia, and Ningxia to the north, Xinjiang and Qinghai to the west, Sichuan to the south, and Shaanxi to the east...

).

Later in the year, Ashina Rangan died, and was succeeded by his son Shibi Khan
Shibi Khan
Shibi Khagan , 611 - 619 AD, succeeded Qimin Khan as the ninth khagan of the Eastern Turkic Khaganate...

 Ashina Duojishi. Pursuant to Tujue customs, Ashina Duojishi requested permission from Emperor Yang to marry Ashina Rangan's wife Princess Yicheng (the daughter of a clansman of Emperor Yang). Emperor Yang agreed. Also in 609, Emperor Yang, jealous of the literary talent of the official Xue Daoheng (薛道衡), he falsely accused Xue of defaming the emperor and had Xue strangled.

By this time, it was said that Emperor Yang's lifestyle had become particularly wasteful, and that he no longer felt bound by moral principles.

In 610, Emperor Yang visited Jiangdu again, and this time elevated Jiangdu's importance so that it effectively became a third capital.

When Emperor Yang was visiting Ashina Rangan in 607, a messenger from Goguryeo
Goguryeo
Goguryeo or Koguryŏ was an ancient Korean kingdom located in present day northern and central parts of the Korean Peninsula, southern Manchuria, and southern Russian Maritime province....

's King King Yeong-yang
Yeong-yang of Goguryeo
King Yeong-yang of Goguryeo was the 26th king of Goguryeo, the northernmost of the Three Kingdoms of Korea. He was the eldest son of King Pyeongwon .-Reign:...

 to Ashina Rangan happened to be present, and Ashina Rangan introduced him to Emperor Yang. Emperor Yang ordered Gao Yuan to come visit him, offering to reward him if he did so and to punish him if he did not do so. Gao Yuan did not respond, and by 611, Emperor Yang, insulted by the lack of response, was preparing a campaign against Goguryeo. With Sui appearing to be in its prime, both governmental officials and the people were initially in support of a campaign to conquer Goguryeo. In spring 611, Emperor Yang went to Zhuo Commandery and announced the campaign against Goguryeo. Several hundred men were conscripted, and it was said that even before they could get to Zhuo Commandery, disease and fatigue had already caused much loss of life. In response, a number of conscripted soldiers deserted and became agrarian rebels.

Also in 611, angry that Western Tujue's khan Ashina Daman, while nominally submissive, had refused to visit him, Emperor Yang had Pei Ju persuade Ashina Daman's subordinate khan Ashina Shegui (阿史那射匱) to rebel against Ashina Daman, promising to give him a Sui princess in marriage. Ashina Shegui thus rebelled against Ashina Daman, forcing Ashina Daman to flee, first to Gaochang
Gaochang
Gaochang is the site of an ancient oasis city built on the northern rim of the inhospitable Taklamakan Desert in Xinjiang, China. A busy trading center, it was a stopping point for merchant traders traveling on the Silk Road...

, then to Sui. Emperor Yang accepted Ashina Daman's submission, and thereafter divided his people into three groups, while leaving Ashina Daman as titularly khan, although he never allowed Ashina Daman to return to his people.

By 612, the soldiers had been gathered at Zhuo Commandery, and Emperor Yang launched his attack, attacking a number of cities in Goguryeo territory, but targeting mainly at the important city of Liaodong (遼東, in modern Liaoyang
Liaoyang
Liaoyang is a city in China, Liaoning province, located in the middle of the Liaodong Peninsula. The city is situated on the T'ai-tzu River and forms with Anshan a built up area of 2,057,200 inhabitants in 2010....

, Liaoning
Liaoning
' is a province of the People's Republic of China, located in the northeast of the country. Its one-character abbreviation is "辽" , a name taken from the Liao River that flows through the province. "Níng" means "peace"...

) and Goguryeo's capital Pyongyang
Pyongyang
Pyongyang is the capital of the Democratic People's Republic of Korea, commonly known as North Korea, and the largest city in the country. Pyongyang is located on the Taedong River and, according to preliminary results from the 2008 population census, has a population of 3,255,388. The city was...

. However, contrary to the desires of the generals, Emperor Yang ordered that their tactical decisions must first be submitted to and approved by him before they could be carried out. By summer 612, Emperor Yang's forces had Liaodong under siege, while he sent another part of the army, commanded by Yuwen Shu, south toward Pyongyang. Several times, Liaodong almost fell, but pursuant to Emperor Yang's orders that if its defense forces were surrendering that attacks were to cease, each time the Goguryeo forces claimed to be surrendering. The attacks then ceased, and once the Goguryeo forces had time to regroup, they resumed their resistance, so Liaodong never fell. The southern offensive, meanwhile, approached Pyongyang but ran into heavy Gogureyo resistance and was not able to proceed further, and was forced to withdraw with heavy casualties. Further, while Baekje
Baekje
Baekje or Paekche was a kingdom located in southwest Korea. It was one of the Three Kingdoms of Korea, together with Goguryeo and Silla....

 had agreed to attack Goguryeo from the south, it never actually did so. By fall 612, Emperor Yang withdrew back to Zhuo Commandery. It was said that of the 305,000 men whom he ordered across the Liao River
Liao River
The Liao River is the principal river in northeast China . The province of Liaoning and the Liaodong Peninsula derive their names from the river....

 into Goguryeo territory, only 2,700 returned. The only territory that Emperor Yang gained was the city of Wulixian (武厲暹, in modern Shenyang
Shenyang
Shenyang , or Mukden , is the capital and largest city of Liaoning Province in Northeast China. Currently holding sub-provincial administrative status, the city was once known as Shengjing or Fengtianfu...

, Liaoning
Liaoning
' is a province of the People's Republic of China, located in the northeast of the country. Its one-character abbreviation is "辽" , a name taken from the Liao River that flows through the province. "Níng" means "peace"...

).

In winter 612, Emperor Yang married a daughter of a clansman, whom he created the Princess Huarong, to Qu Boya (麴伯雅) the king of Gaochang
Gaochang
Gaochang is the site of an ancient oasis city built on the northern rim of the inhospitable Taklamakan Desert in Xinjiang, China. A busy trading center, it was a stopping point for merchant traders traveling on the Silk Road...

.

In spring 613, Emperor Yang again ordered that soldiers be gathered at Zhuo Commandery, as he prepared a second campaign against Goguryeo. He also selected the most elite of the soldiers into a specialized corps, the Xiaoguo Army (驍果, meaning, "the strong and brave"). Thereafter, the Xiaoguo Army became his own personal guards. In response to the conscription order, even more men deserted and joined the agrarian rebels, throwing the northern central part of the empire into a state of confusion. With the commandery officials having little military training, the rebels largely went unchecked but for the efforts of the general Zhang Xutuo (張須陀), who was able to defeat some of the rebels but was not able to generally suppress them.

In summer 613, Emperor Yang crossed the Liao River again and put Liaodong under siege, while sending Yuwen and Yang Yichen
Yang Yichen (Sui Dynasty)
Yang Yichen , né Yuchi Yichen , was a general of the Chinese dynasty Sui Dynasty. During the late reign of Emperor Yang, Yang Yichen was one of the few Sui generals having success against agrarian rebels, but in 616, Emperor Yang, suspicious of Yang Yichen's abilities, removed him from his...

 south toward Pyongyang. This time, Emperor Yang gave the generals freer rein, and it appeared that Liaodong was on the verge of falling. However, at this time, news arrived that Yang Su's son Yang Xuangan
Yang Xuangan
Yang Xuangan was an official of the Chinese dynasty Sui Dynasty. He was the son of the powerful official Yang Su, and, as he knew that Emperor Yang was apprehensive of his father, was never quite secure. In 613, when Emperor Yang was attacking Goguryeo, he rebelled near the eastern capital...

 had rebelled near Luoyang. With the people disaffected by the Goguryeo campaigns, Yang Xuangan received much popular support and threatened Luoyang. Emperor Yang, in fear, lifted the siege on Liaodong and also ordered the southern offensive to be terminated, returning to Zhuo Commandery while sending Yuwen and Qutu Tong (屈突通) south to aid Luoyang. The general in charge of defending Chang'an, Wei Wensheng (衛文昇), also came to Luoyang's aid. Together, these forces outnumbered Yang Xuangan's and dealt him several defeats. Yang Xuangan decided to try to advance west to capture Chang'an as a base of operations, but on the way was again defeated, and he had his brother Yang Jishan (楊積善) kill him, to avoid capture. At Emperor Yang's orders, the officials Fan Zigai (樊子蓋) and Pei Yun (裴蘊) carried out mass-scale reprisals, executing a large number of people who had followed Yang Xuangan. Around the new year 614, by Emperor Yang's orders, Yang Jishan and Yang Xuangan's strategist Wei Fusi (韋福嗣) were publicly executed in exceedingly cruel manners—the officials all fired arrows at them, and then they were further drawn and quartered, and then their bodies were burned and the ashes scattered.

Around the same time, there were also rebellions south of the Yangtze River, and Emperor Yang sent the official Wang Shichong
Wang Shichong
Wang Shichong , courtesy name Xingman , was a general of the Chinese Sui Dynasty who deposed Sui's last emperor Yang Tong and briefly ruled as the emperor of a succeeding state of Zheng...

 against the rebels. Wang was able to suppress the rebellions, for the most part, and thereafter began to rise in prominence at Emperor Yang's court. Meanwhile, Emperor Yang ordered that rebels' possessions could be confiscated at will. The local officials, however, used this as an excuse to execute and confiscate properties of those they did not like.

Late reign

In spring 614, Emperor Yang again proposed another campaign against Goguryeo. Although his officials did not approve, none dared to oppose him. Many of the soldiers ordered to report to Zhuo Commandery deserted. Emperor Yang tried to stop desertions by executing those who deserted, but still could not stem the tied of desertions. However, Goguryeo was also worn out, and by fall 614, after advances by Emperor Yang's general Lai Hu'er (來護兒) across the Yalu River
Yalu River
The Yalu River or the Amnok River is a river on the border between North Korea and the People's Republic of China....

, Goguryeo offered peace, returning Yan Xuangan's associate Husi Zheng (斛斯政), who had fled to Goguryeo after his association with Yang Xuangan was discovered. Lai initially opposed ending the campaign, but did finally withdraw after ordered by Emperor Yuan. Emperor Yang executed Husi using the same kind of cruelty that he employed against Yang Jishan and Wei Fusi, but afterwards, when he again summoned Goguryeo's King Yeong-yang to meet him, King Yeong-yang again ignored him. Emperor Yang declared a fourth campaign against Goguryeo—but he never actually launched it. Meanwhile, agrarian rebellions continued to rise. While generals such as Zhang Xutuo and Wang Sichong enjoyed victories here and there, the situation was deteriorating for the welfare of the Sui state at large.

In spring 615, believing in accusations by Yuwen Shu that the official Li Hun (李渾) was intending to carry out a coup to replace Emperor Yang with his nephew Li Min (李敏, son-in-law of Emperor Yang's sister Yang Lihua the Princess Leping) and worried about prophecies that someone named Li would become the next emperor, Emperor Yang had Li Hun, Li Min, and their clansmen executed, and further poisoned Yang Lihua's daughter Yuwen Eying (宇文娥英).

Later in 615, Emperor Yang carried out a tour of the northern provinces. While he was at Yanmen (雁門, in modern Xinzhou, Shanxi
Shanxi
' is a province in Northern China. Its one-character abbreviation is "晋" , after the state of Jin that existed here during the Spring and Autumn Period....

), Ashina Duojishi, who had become disaffected because Emperor Yang was trying to divide his power by promising to give a princess to Ashina Duojishi's brother Ashina Chiji (阿史那叱吉) and had executed Ashina Duojishi's trusted advisor Shishu Huxi (史蜀胡悉) under false pretenses, launched a surprise attack on Yanmen and, although Princess Yicheng had secretly sent Emperor Yang warnings, Sui forces were still surprised. Ashina Duojishi put Yanmen under siege. It was said that Emperor Yang became fearful that he was crying all day, holding onto his youngest son Yang Gao
Yang Gao
Yang Gao , nickname Jizi , was an imperial prince of the Chinese dynasty Sui Dynasty. He was the youngest son of Emperor Yang....

 the Prince of Zhao. Yuwen Shu suggested that Emperor Yang take the most elite guards and try to fight out of the siege, but Su Wei
Su Wei
Su Wei , courtesy name Wuwei , was a high level official of the Chinese dynasty Sui Dynasty. He first became an important official during the reign of Sui's founder Emperor Wen, and after Emperor Wen's death continued to serve Emperor Wen's son Emperor Yang. He was often praised for his...

 and Fan Zigai opposed. Empress Xiao's brother Xiao Yu
Xiao Yu
Xiao Yu , courtesy name Shiwen , formally Duke Zhenbian of Song , was an imperial prince of the Chinese dynasty Liang Dynasty who later became an official for Sui Dynasty and Tang Dynasty, serving as a chancellor at times during the reigns of Emperor Gaozu of Tang and Emperor Taizong of Tang.-...

 suggested seeking help from Princess Yicheng, and Emperor Yang did so. Meanwhile, Emperor Yang also personally visited the soldiers defending the city, promising to end the campaigns against Goguryeo and to reward them with honors and treasure. Princess Yicheng falsely informed Ashina Duojishi that Tujue was under attack from the north, and meanwhile, relief troops from Luoyang and the other commanderies were arriving, so Ashina Duojishi lifted the siege.

Upon the lifting of the siege, however, Emperor Yang reneged on his promises—he did not return to the capital Chang'an, but went to Luoyang instead; he continued to discuss a campaign against Goguryeo; and he did not bestow the honors and rewards he promised. When Fan and Xiao Yu reminded him of the promises, Emperor Yang rebuked Fan and demoted Xiao Yu.

Emperor Yang only appeared to begin to be concerned about rebels when, at the lunar new year
Chinese New Year
Chinese New Year – often called Chinese Lunar New Year although it actually is lunisolar – is the most important of the traditional Chinese holidays. It is an all East and South-East-Asia celebration...

 imperial gathering in 616, 20 odd commanderies' messengers did not arrive—either because they had fallen into rebel hands, or because their messengers were intercepted or killed on the way. Only then did Emperor Yang begin talking about suppressing the rebels. Apparently beginning to consider the idea of evacuating to south of the Yangtze River, he ordered that a major palace be built at Piling Commandery (毗陵, roughly modern Changzhou
Changzhou
Changzhou is a prefecture-level city in southern Jiangsu province of the People's Republic of China. It was previously known as Yanling, Lanling, Jinling, and Wujin. Located on the southern bank of the Yangtze River, Changzhou borders the provincial capital of Nanjing to the west, Zhenjiang to the...

, Jiangsu
Jiangsu
' is a province of the People's Republic of China, located along the east coast of the country. The name comes from jiang, short for the city of Jiangning , and su, for the city of Suzhou. The abbreviation for this province is "苏" , the second character of its name...

), and that another palace be built at Kuaiji Commandery (會稽, roughly modern Shaoxing
Shaoxing
Shaoxing is a prefecture-level city in northeastern Zhejiang province, People's Republic of China. Located on the south bank of the Qiantang River estuary, it borders Ningbo to the east, Taizhou to the southeast, Jinhua to the southwest, and Hangzhou to the west. It was once known as "越"...

, Zhejiang
Zhejiang
Zhejiang is an eastern coastal province of the People's Republic of China. The word Zhejiang was the old name of the Qiantang River, which passes through Hangzhou, the provincial capital...

). However, he did not like to hear news about rebels, and when Su expressed concerns about the rebels, Emperor Yang had Su falsely accused of crimes and initially was poised to execute him, but instead demoted him to commoner rank.

By fall 616, Emperor Yang had resolved to go to Jiangdu, at Yuwen Shu's suggestion. A number of officials opposed, reasoning that if he left Luoyang, Luoyang would fall into enemy hands; Emperor Yang punished all, some with execution, and proceeded to Jiangdu. He wrote a farewell poem to the ladies in waiting in Luoyang, which included two lines that read:
I dream of Jiangdu's beauty;
And it was only occasional that I advance past the Liao River.


Once Emperor Yang left Luoyang, Yang Xuangan's former strategist Li Mi, who by this point was advising the rebel general Zhai Rang
Zhai Rang
Zhai Rang was a key agrarian rebel leader near the end of the Chinese dynasty Sui Dynasty. Believing prophecies that appeared to indicate that Li Mi would be emperor, he supported Li as leader and offered to serve under Li, but soon they began to have conflicts over distribution of spoils...

, advised Zhai to directly assault the Luoyang region. Zhai agreed, and killed Zhang Xutuo in a battle; thereafter, the morale of the Sui troops became greatly damaged. Zhai, believing in the prophecies about the next emperor being a Li, began to honor Li Mi as his leader. Meanwhile, the Sui general Yang Yichen was having success against the rebels north of the Yellow River, killing Zhang Jincheng (張金稱) and Gao Shida (高士達), but Emperor Yang and his prime minister Yu Shiji
Yu Shiji
Yu Shiji , courtesy name Maoshi , was an official of the Chinese dynasties Chen Dynasty and Sui Dynasty. He was particularly powerful during the reign of Emperor Yang of Sui and became prime minister, and was faulted by traditional historians for placating Emperor Yang and not reacting properly...

, fearful of Yang Yichen's talent, ostensibly promoted Yang Yichen and recalled him to be a minister. Yang Yichen died soon thereafter, and the rebels north of the Yellow River reinvigorated themselves under Dou Jiande
Dou Jiande
Dou Jiande was a leader of the agrarian rebels who rose against the rule of Emperor Yang of Sui near the end of the Chinese dynasty Sui Dynasty...

. By 617, several other major rebels had also emerged, including:
  • Du Fuwei
    Du Fuwei
    Du Fuwei , known during service to Tang Dynasty as Li Fuwei , was an agrarian leader who rose against the rule of Emperor Yang of Sui at the end of the Chinese dynasty Sui Dynasty. At one point, he had ambitions to take over the region south of the Yangtze River for himself, but he later chose to...

    , agrarian rebel, occupying the modern southern Anhui
    Anhui
    Anhui is a province in the People's Republic of China. Located in eastern China across the basins of the Yangtze River and the Huai River, it borders Jiangsu to the east, Zhejiang to the southeast, Jiangxi to the south, Hubei to the southwest, Henan to the northwest, and Shandong for a tiny...

     region.
  • Gao Kaidao
    Gao Kaidao
    Gao Kaidao , at one point known as Li Kaidao , was an agrarian rebel leader who rose against Sui Dynasty rule at the end of Emperor Yang's reign. He occupied the region centering Huairong and claimed the title of Prince of Yan, in alliance with Eastern Tujue...

    , agrarian rebel, occupying the modern extremely northern Hebei
    Hebei
    ' is a province of the People's Republic of China in the North China region. Its one-character abbreviation is "" , named after Ji Province, a Han Dynasty province that included what is now southern Hebei...

     region.
  • Liang Shidu
    Liang Shidu
    Liang Shidu was an agrarian leader who rebelled against the rule of the Chinese dynasty Sui Dynasty near the end of the reign of Emperor Yang of Sui...

    , agrarian rebel, occupying the modern central Inner Mongolia
    Inner Mongolia
    Inner Mongolia is an autonomous region of the People's Republic of China, located in the northern region of the country. Inner Mongolia shares an international border with the countries of Mongolia and the Russian Federation...

     region, declaring himself the Emperor of Liang.
  • Li Gui
    Li Gui
    Li Gui , courtesy name Chuze , was the emperor of a short-lived state of Liang, which he established at the end of the Chinese Sui Dynasty. He governed the parts of modern Gansu west of the Yellow River...

    , formerly a Sui official, occupying the modern central and western Gansu
    Gansu
    ' is a province located in the northwest of the People's Republic of China.It lies between the Tibetan and Huangtu plateaus, and borders Mongolia, Inner Mongolia, and Ningxia to the north, Xinjiang and Qinghai to the west, Sichuan to the south, and Shaanxi to the east...

     region, declaring himself the Prince of Liang.
  • Li Yuan
    Emperor Gaozu of Tang
    Emperor Gāozǔ of Táng , born Lǐ Yuān , courtesy name Shūdé , was the founder of the Tang Dynasty of China, and the first emperor of this dynasty from 618 to 626. Under the Sui dynasty, Li Yuan was the governor in the area of modern-day Shanxi, and was based in Taiyuan.In 615, Li Yuan was assigned...

    , formerly a Sui official (and Emperor Yang's cousin), occupying the modern central Shanxi
    Shanxi
    ' is a province in Northern China. Its one-character abbreviation is "晋" , after the state of Jin that existed here during the Spring and Autumn Period....

     region, announcing that he wanted to make Emperor Yang's grandson Yang You the Prince of Dai, then at Chang'an, emperor.
  • Lin Shihong
    Lin Shihong
    Lin Shihong was an agrarian leader who rose against the rule of the Chinese Sui Dynasty near the end of Emperor Yang's reign. For several years, he controlled most of modern Jiangxi and Guangdong, but was then under attack by others, gradually reduced to fighting a guerrilla war against Tang...

    , agrarian rebel, occupying the modern Jiangxi
    Jiangxi
    ' is a southern province in the People's Republic of China. Spanning from the banks of the Yangtze River in the north into hillier areas in the south, it shares a border with Anhui to the north, Zhejiang to the northeast, Fujian to the east, Guangdong to the south, Hunan to the west, and Hubei to...

     and Guangdong
    Guangdong
    Guangdong is a province on the South China Sea coast of the People's Republic of China. The province was previously often written with the alternative English name Kwangtung Province...

     region, declaring himself the Emperor of Chu.
  • Liu Wuzhou
    Liu Wuzhou
    Liu Wuzhou was a rebel leader who rose against the rule of the Chinese dynasty Sui Dynasty late in the dynasty's history, and he took imperial style -- although it was not completely clear whether the title he took was khan or tianzi...

    , agrarian rebel, occupying the modern northern Shanxi region, declaring himself the Dingyang Khan.
  • Luo Yi
    Luo Yi
    Luo Yi , known during service to Tang Dynasty as Li Yi , courtesy name Ziyan or Ziting , was a Sui Dynasty official who rose against the rule of Emperor Yang of Sui and occupied the modern Beijing region. He subsequently submitted to Emperor Gaozu of Tang and was created the Prince of Yan and...

    , former a Sui general, occupying the modern Beijing
    Beijing
    Beijing , also known as Peking , is the capital of the People's Republic of China and one of the most populous cities in the world, with a population of 19,612,368 as of 2010. The city is the country's political, cultural, and educational center, and home to the headquarters for most of China's...

     region.
  • Xiao Xi
    Xiao Xi
    Xiao Xian was a descendant of the imperial house of the Chinese dynasty Liang Dynasty, who rose against the rule of Sui Dynasty toward the end of the rule of Emperor Yang of Sui...

    , formerly a Sui official, a grandson of Emperor Xuan of Western Liang
    Emperor Xuan of Western Liang
    Emperor Xuan of Liang , personal name Xiao Cha , courtesy name Lisun , was a emperor of the Chinese Liang Dynasty...

    , occupying the modern Hubei
    Hubei
    ' Hupeh) is a province in Central China. The name of the province means "north of the lake", referring to its position north of Lake Dongting...

    , Hunan
    Hunan
    ' is a province of South-Central China, located to the south of the middle reaches of the Yangtze River and south of Lake Dongting...

    , and Guangxi
    Guangxi
    Guangxi, formerly romanized Kwangsi, is a province of southern China along its border with Vietnam. In 1958, it became the Guangxi Zhuang Autonomous Region of the People's Republic of China, a region with special privileges created specifically for the Zhuang people.Guangxi's location, in...

     region, declaring himself the Emperor of Liang.
  • Xue Ju
    Xue Ju
    Xue Ju , formally Emperor Wu , was the founding emperor of a short-lived state of Qin at the end of the Chinese dynasty Sui Dynasty, whose state was eventually destroyed by Tang Dynasty...

    , agrarian rebel, occupying the modern eastern Gansu and western Shaanxi
    Shaanxi
    ' is a province in the central part of Mainland China, and it includes portions of the Loess Plateau on the middle reaches of the Yellow River in addition to the Qinling Mountains across the southern part of this province...

     region, declaring himself the Hegemonic Prince of Western Qin.
  • Zhu Can
    Zhu Can
    Zhu Can was an agrarian rebel leader during the disintegration of the Chinese dynasty Sui Dynasty. He was particularly noted for his cruelty and his penchant for favoring cannibalism, and he, while not having a set base of operation, generally roved with his army in the modern southern Henan...

    , formerly a Sui official, roving with his army in the modern southern Henan
    Henan
    Henan , is a province of the People's Republic of China, located in the central part of the country. Its one-character abbreviation is "豫" , named after Yuzhou , a Han Dynasty state that included parts of Henan...

     and southeastern Shaanxi region, first declaring himself the Prince of Jialuolou, and then the Emperor of Chu.


By spring 617, Li Mi and Zhai had captured Emperor Yang's main food storages near Luoyang, the Luokou and Huiluo Storages, thus keeping their army well-supplied while making the Sui forces at Luoyang beginning to lack food. Li Mi took the title of Duke of Wei, while creating Zhai the Duke of Dong Commandery (although Li soon, fearful of Zhai, killed him and seized Zhai's army). A number of other agrarian rebels at least nominally submitted to Li Mi, including Dou and Li Yuan, and it was often thought at the time that Li Mi would soon be able to become emperor. Emperor Yang sent Wang to Luoyang to aid in its defenses, and Li's offensives stalled. Meanwhile, Li Yuan advanced southwest and captured Chang'an in winter 617. He declared Yang You emperor (as Emperor Gong) while honoring Emperor Yang as Taishang Huang
Taishang Huang
Retired Emperor, Grand Emperor, or Emperor Emeritus is a title occasionally used throughout East Asian feudal regimes for former emperors who had abdicated voluntarily to their sons. This title appeared in the history of China, Japan, Korea, and Vietnam...

(retired emperor), and he himself wielded actual authority over the western Sui commanderies under the title of Prince of Tang.

Meanwhile, at Jiangdu, it was said that Emperor Yang's lifestyle grew increasingly decadent. His palace contained over 100 chambers, each exceedingly luxurious and full of beautiful women. The women of each chamber would serve as hostesses for a feast each day, and Emperor Yang, Empress Xiao, and Emperor Yang's favored concubines would be their guests. Emperor Yang began to come to the realization that his fall was near, but still commented as if he did not care. It was said that on one occasion, he told Empress Xiao, "There must be many people who want to hurt me. However, I will at least be the Duke of Changcheng [i.e., be like Chen Shubao], and you will at least be like Empress Shen
Empress Shen Wuhua
Empress Shen Wuhua , later Buddhist nun name Guanyin , was an empress of the Chinese dynasty Chen Dynasty. Her husband was Chen Shubao, the last emperor of the dynasty....

 [(Chen Shubao's wife)]. Do not worry. Let us drink and be merry." It was also said that on another occasion, when he was looking in the mirror, he told Empress Xiao, "I have a good neck, and I'm waiting for someone to sever it." Empress Xiao, surprised and distressed by his comment, asked him why he was saying so, and he responded and smiled, "Honor and wealth and poverty and dishonor, as well as pain and pleasure, all come in cycles. Why be distressed?" Meanwhile, not wanting to return to the turbulent north, he discussed with his officials about moving the capital to Danyang (丹楊, in modern Nanjing
Nanjing
' is the capital of Jiangsu province in China and has a prominent place in Chinese history and culture, having been the capital of China on several occasions...

, Jiangsu
Jiangsu
' is a province of the People's Republic of China, located along the east coast of the country. The name comes from jiang, short for the city of Jiangning , and su, for the city of Suzhou. The abbreviation for this province is "苏" , the second character of its name...

). His elite Xiaoguo Army guards, missing their families in the north and realizing that Emperor Yang did not intend to return north, began to desert. Their commanders Sima Dekan (司馬德勘), Yuan Li (元禮), and Pei Qiantong (裴虔通), worried that Emperor Yang would punish them, began considering rebelling and taking the Xiaoguo Army north themselves instead. They associated with a number of other officers and officials, discussing so publicly that even the ladies in waiting began to hear about it. When one reported to Empress Xiao, Empress Xiao had her report to Emperor Yang—but Emperor Yang, not wishing to hear about the bad news, beheaded her. When another reported to Empress Xiao, Empress Xiao no longer permitted her to report to Emperor Yang, figuring that it was too late.

Meanwhile, the Xiaoguo Army officers planning the mutiny had by this time decided on supporting Yuwen Shu's son Yuwen Huaji
Yuwen Huaji
Yuwen Huaji was a general of the Chinese dynasty Sui Dynasty who, in 618, led a coup against Emperor Yang of Sui, killing him. He subsequently declared Emperor Yang's nephew Yang Hao led Emperor Yang's elite Xiaoguo Army north, but was then repeatedly defeated by Li Mi, Li Shentong , and...

 as their leader. In late spring 618, they launched the coup. They entered the palace and surrounded Emperor Yang, accusing him of crimes. Emperor Yang admitted his faults, but pointed out that he had always treated them well—drawing the response from Sima: "All of the earth is angry at you. It does not stop at just one man." They killed Yang Gao to show him that they were serious. Emperor Yang thereafter offered to take poison, but poison could not be found quickly. He thereafter took off his scarf, and the soldier Linghu Xingda (令狐行達) strangled him with it. The coup participants also killed a number of high level officials and relatives of Emperor Yang, including Emperor Yang's brother Yang Xiu and his sons, son Yang Jian and his sons, grandson Yang Tan the Prince of Yan, Yu Shiji, Pei Yun, Lai Hu'er, Yuan Chong (袁充), Yuwen Xie (宇文協), Yuwen Jiong (宇文皛), and Xiao Ju (蕭鉅) the Duke of Liang (Empress Xiao's nephew). The only close relative to Emperor Yang who was spared was his nephew Yang Hao
Yang Hao (Sui Dynasty)
Yang Hao , often known by his princely title of Prince of Qin , was one of the claimants of the throne of the Chinese Sui Dynasty at the dynasty's end.-Background:...

 the Prince of Qin, who was friendly with Yuwen Huaji's brother Yuwen Zhiji (宇文智及). Yuwen Huaji thereafter declared Yang Hao emperor. Empress Xiao and the ladies in waiting, with no one else to help them, were forced to make makeshift caskets for Emperor Yang and Yang Gao using headboards from their beds. It was not until Yuwen Huaji left Jiangdu that the Sui official Chen Leng (陳稜) buried Emperor Yang with reduced ceremony. In 622, after Li Yuan had established Tang Dynasty
Tang Dynasty
The Tang Dynasty was an imperial dynasty of China preceded by the Sui Dynasty and followed by the Five Dynasties and Ten Kingdoms Period. It was founded by the Li family, who seized power during the decline and collapse of the Sui Empire...

 as its Emperor Gaozu and had somewhat reunified the empire, he reburied Emperor Yang with honors. His tomb moved some times. People said it's because of his bad behaviour that makes his tomb being hit with thunder wherever it moved.

Did Emperor Yang kill Emperor Wen?

While no allegations were made at the time that Emperor Wen's death was anything other than the result of illness, starting from the time of the succeeding Tang Dynasty
Tang Dynasty
The Tang Dynasty was an imperial dynasty of China preceded by the Sui Dynasty and followed by the Five Dynasties and Ten Kingdoms Period. It was founded by the Li family, who seized power during the decline and collapse of the Sui Empire...

, it was generally assumed that Emperor Wen was killed on Emperor Yang's orders—although more neutral historians generally assumed it to be true while stating that there was no direct evidence. An example is the Song Dynasty
Song Dynasty
The Song Dynasty was a ruling dynasty in China between 960 and 1279; it succeeded the Five Dynasties and Ten Kingdoms Period, and was followed by the Yuan Dynasty. It was the first government in world history to issue banknotes or paper money, and the first Chinese government to establish a...

 historian Sima Guang
Sima Guang
Sīmǎ Guāng was a Chinese historian, scholar, and high chancellor of the Song Dynasty, jinshi 1038.-Life, profession, and works:...

's Zizhi Tongjian
Zizhi Tongjian
The Zizhi Tongjian was a pioneering reference work in Chinese historiography, published in 1084, under the form of a chronicles. In 1065 CE, Emperor Yingzong of Song ordered the great historian Sima Guang to lead with other scholars such as his chief assistants Liu Shu, Liu Ban and Fan Zuyu, the...

, generally considered one of the most reliable, albeit secondary, source in Chinese history, which, after mentioning Emperor Wen's death and giving a commentary on Emperor Wen's reign, then gave this account:
More detailed versions of the story largely alleged that Zhang Heng personally killed Emperor Wen by pounding his chest and breaking his ribs. The advocates for the theory that Emperor Wen was killed on Emperor Yang's orders also pointed to other circumstantial evidence, including how immediately after Emperor Wen's death Emperor Yang took Consorts Chen and Cai as his concubines. Further, after Zhang lost Emperor Yang's favors and eventually was executed in 612, Zhang lamented at the execution field, "What did I do for him that I can expect to live long?" The warden, apparently believing in the murder theory himself, immediately covered his ears to avoid hearing any details and had Zhang immediately executed. They further pointed out how Liu Shu and Yuan Yan were exiled and Yang Yong executed immediately following Emperor Wen's death.

However, particularly in more recent times, some historians have questioned this theory. They pointed out that in the most official histories written not long after (the Book of Sui
Book of Sui
The Book of Sui was the official history of the Chinese dynasty Sui Dynasty, and it ranks among the official Twenty-Four Histories of imperial China. It was compiled by a team of historians led by the Tang Dynasty official Wei Zheng and was completed in 636.-External links:* of the Book of Sui,...

and the History of Northern Dynasties
History of Northern Dynasties
The History of Northern Dynasties is one of the official Chinese historical works in the Twenty-Four Histories canon. It contain 100 volumes and covers the period from 386 to 618, the histories of Northern Wei, Western Wei, Eastern Wei, Northern Zhou, Northern Qi, and Sui Dynasty...

), no allegations of patricide was levied against Emperor Yang in either Emperor Wen's or Emperor Yang's biographies, or Zhang's, even though many other accusations were made of Emperor Yang's misrule. Indeed, they pointed out the origin of the murder theory appeared to come from the Daye Lüeji (大業略記) by the early Tang author Zhao Yi (趙毅), in whose version of the story, Consort Cai, not Consort Chen, was the concubine involved. They also pointed out that all of the circumstantial evidence had other plausible explanations—and that, indeed, why were Liu and Yuan not killed if they knew the truth? However, the idea that Emperor Wen was killed on Emperor Yang's orders has become ingrained in the traditional Chinese mindset, although the truth might never be known.

Arts

Emperor Yang was also a patron of the arts, having expanded the number of foreign orchestras (from across Asia) at the Sui court from seven to nine. He was, in fact, quite a gifted artist himself, but one prone to horrible fits of jealousy and stubbornness, who seldom listened to the advice of more talented individuals. He was a talented poet but killed two poets after he found their stanzas to be superior to his own.

Personal information

  • Father
    • Emperor Wen of Sui
      Emperor Wen of Sui
      Emperor Wen of Sui — personal name Yang Jian , Xianbei name Puliuru Jian , nickname Naluoyan — was the founder and first emperor of China's Sui Dynasty . He was a hard-working administrator and a micromanager. As a Buddhist, he encouraged the spread of Buddhism through the state...

  • Mother
    • Empress Dugu Qieluo
      Empress Dugu Qieluo
      Empress Dugu Qieluo , formally Empress Wenxian , was an empress of the Chinese dynasty Sui Dynasty...

  • Wife
    • Empress Xiao
      Empress Xiao (Yang)
      Empress Xiao , formally Empress Min , was an empress of the Chinese Sui Dynasty...

       (created 605), formerly Princess Xiao of Western Liang
      Western Liang
      The Western Liang was a state of the Sixteen Kingdoms in China. It was founded by the Li family of the Han Chinese. The founder of the Tang Dynasty, Li Yuan , traced his ancestry to the Western Liang rulers....

      , mother of Crown Prince Zhao, Prince Jian, and Princess Nanyang
  • Major Concubines
    • Consort Xiao, mother of Prince Gao
    • Consort Chen
      Consort Chen (Wen)
      Consort Chen , born Princess Ningyuan was a daughter of Emperor Xuan of Chen and imperial concubine to Emperor Wen of Sui, founder of the Sui Dynasty.-Biography:...

      , originally concubine of Emperor Wen, sister of Chen Shubao
      Chen Shubao
      Chen Shubao , often known in history as Houzhu of Chen , posthumous name Duke Yang of Changcheng , courtesy name Yuanxiu , nickname Huangnu , was the last emperor of the Chinese Chen Dynasty...

    • Consort Cai, originally concubine of Emperor Wen
    • Consort Chen Chou (陳綢), daughter of Chen Shubao
    • Consort Wang, niece of Li Yuan
      Emperor Gaozu of Tang
      Emperor Gāozǔ of Táng , born Lǐ Yuān , courtesy name Shūdé , was the founder of the Tang Dynasty of China, and the first emperor of this dynasty from 618 to 626. Under the Sui dynasty, Li Yuan was the governor in the area of modern-day Shanxi, and was based in Taiyuan.In 615, Li Yuan was assigned...

  • Children
    • Yang Zhao
      Yang Zhao
      Yang Zhao , formally Crown Prince Yuande , posthumously honored as Emperor Xiaocheng with the temple name Shizong during the brief reign of his son Yang Tong, was a crown prince of the Chinese dynasty Sui Dynasty...

       (楊昭), initially the Prince of Henan (created 590), later the Prince of Jin (created 601), later the Crown Prince (created 605, d. 606)
    • Yang Jian (楊暕), initially the Prince of Yuzhang (created 593), later the Prince of Qi (created 605, executed by Yuwen Huaji
      Yuwen Huaji
      Yuwen Huaji was a general of the Chinese dynasty Sui Dynasty who, in 618, led a coup against Emperor Yang of Sui, killing him. He subsequently declared Emperor Yang's nephew Yang Hao led Emperor Yang's elite Xiaoguo Army north, but was then repeatedly defeated by Li Mi, Li Shentong , and...

       618)
    • Yang Gao
      Yang Gao
      Yang Gao , nickname Jizi , was an imperial prince of the Chinese dynasty Sui Dynasty. He was the youngest son of Emperor Yang....

       (楊杲), the Prince of Zhao (created 613, killed by Pei Qiantong (裴虔通) 618)
    • Princess Nanyang (d. 630)
    • A daughter (may be same person as the Princess Nanyang), concubine of Emperor Taizong of Tang
      Emperor Taizong of Tang
      Emperor Taizong of Tang , personal name Lǐ Shìmín , was the second emperor of the Tang Dynasty of China, ruling from 626 to 649...

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