Guo Yi, style name

Chinese style name

A Chinese style name, sometimes also known as a courtesy name , is a given name to be used later in life. After 20 years of age, the zì is assigned in place of one's given name as a symbol of adulthood and respect...

 Boyi (伯益), was a minister of Cao Wei

Cao Wei

Cao Wei was one of the states that competed for control of China during the Three Kingdoms period. With the capital at Luoyang, the state was established by Cao Pi in 220, based upon the foundations that his father Cao Cao laid...

 during the Three Kingdoms

Three Kingdoms

The Three Kingdoms period was a period in Chinese history, part of an era of disunity called the "Six Dynasties" following immediately the loss of de facto power of the Han Dynasty rulers. In a strict academic sense it refers to the period between the foundation of the state of Wei in 220 and the...

 period of Chinese history

History of China

Chinese civilization originated in various regional centers along both the Yellow River and the Yangtze River valleys in the Neolithic era, but the Yellow River is said to be the Cradle of Chinese Civilization. With thousands of years of continuous history, China is one of the world's oldest...

. He was also a son of Guo Jia

Guo Jia

Guo Jia was a strategist and advisor to the warlord Cao Cao during the late Han Dynasty period of Chinese history. During his 11 years of service, Guo Jia's brilliance greatly aided Cao Cao in his victories over rival warlords Lü Bu and Yuan Shao, as well as chief of the Wuhuan tribe, Tadun...

.

Guo Yi was taken into the home of Cao Cao

Cao Cao

Cao Cao was a warlord and the penultimate chancellor of the Eastern Han Dynasty who rose to great power during the dynasty's final years. As one of the central figures of the Three Kingdoms period, he laid the foundations for what was to become the state of Cao Wei and was posthumously titled...

following the death of Guo Jia, going on to achieve the title of Imperial Tutor. Guo Yi was known throughout Cao Wei as very educated, like his father, but had changes of manners when meeting with different people.