Buyeo Yung was one of the sons of King Uija, the last king of 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....

. He was appointed as heir to the throne in 644

644

Year 644 was a leap year starting on Thursday of the Julian calendar. The denomination 644 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.- Asia :* The Tang dynasty of China begins the invasion...

, and would have been the kingdom's 32nd ruler.

After his father was overthrown by an alliance of Silla

Silla

Silla was one of the Three Kingdoms of Korea, and one of the longest sustained dynasties in...

 and the Chinese 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...

 in 660

660

Year 660 was a leap year starting on Wednesday of the Julian calendar. The denomination 660 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.- Europe :* Slavic principality of Carantania is first...

, Buyeo Yung was sent into exile at the Tang capital 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...

, along with his father. After the defeat of the Baekje restoration movement led by Boksin and Dochim at the Battle of Baekgang

Battle of Baekgang

The Battle of Baekgang, also known as Battle of Baekgang-gu or by the Japanese name Battle of Hakusukinoe , was a battle between Baekje restoration forces and their ally, Yamato Japan, against the allied forces of Silla and the Tang Dynasty of ancient China...

, which had sought to place Yung's brother Buyeo Pung

Buyeo Pung

Buyeo Pung, known as in Japan, was one of the sons of King Uija of Baekje. When Baekje, one of the Three Kingdoms of Korea, fell to the alliance of Silla and Tang Dynasty in 660, he was in the Wa state of Japan to ensure the alliance between Japan and Baekje. However, there is much dispute about...

 on the throne, Tang felt the need for a ruler who could pacify the Baekje area. Beginning in 664

664

Year 664 was a leap year starting on Monday of the Julian calendar. The denomination 664 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.- Asia :* Arab armies conquer Kabul.* Kuo Wu Tsung of Tang...

, Buyeo Yung served briefly as the governor of the "Ungjin Commandery" (Hangul

Hangul

Hangul,Pronounced or ; Korean: 한글 Hangeul/Han'gŭl or 조선글 Chosŏn'gŭl/Joseongeul the Korean alphabet, is the native alphabet of the Korean language. It is a separate script from Hanja, the logographic Chinese characters which are also sometimes used to write Korean...

:웅진도독부 Hanja

Hanja

Hanja is the Korean name for the Chinese characters hanzi. More specifically, it refers to those Chinese characters borrowed from Chinese and incorporated into the Korean language with Korean pronunciation...

:熊津都督府) which Tang established to oversee the former territory of Baekje.

After Silla expelled Tang forces from the Korean peninsula in 676

676

Year 676 was a leap year starting on Tuesday of the Julian calendar. The denomination 676 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.- Asia :* In Japan, Emperor Temmu promulgate a decree...

, Buyeo Yung returned to Luoyang, where he spent the rest of his days.