Yuan Xi was the second son of the warlord Yuan Shao

Yuan Shao

Yuan Shao was a warlord during the late Han Dynasty period of Chinese history. He occupied the northern territories of China during the civil war that occurred towards the end of the Han Dynasty and the beginning of the Three Kingdoms era...

 during the late Han Dynasty

Han Dynasty

The Han Dynasty was the second imperial dynasty of China, preceded by the Qin Dynasty and succeeded by the Three Kingdoms . It was founded by the rebel leader Liu Bang, known posthumously as Emperor Gaozu of Han. It was briefly interrupted by the Xin Dynasty of the former regent Wang Mang...

 era 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...

.

Yuan was described in Luo Guanzhong

Luo Guanzhong

Luo Ben , better known by his style name Luo Guanzhong , was a Chinese writer of the early Ming Dynasty period of Chinese history. He was also known as Huhai Sanren...

's historical novel Romance of the Three Kingdoms

Romance of the Three Kingdoms

Romance of the Three Kingdoms, written by Luo Guanzhong in the 14th century, is a Chinese historical novel based on the events in the turbulent years near the end of the Han Dynasty and the Three Kingdoms era of Chinese history, starting in 169 and ending with the reunification of the land in...

as "intelligent but weak and indecisive", in contrast to his older brother Yuan Tan

Yuan Tan

Yuan Tan was the oldest son of the warlord Yuan Shao during the late Han Dynasty period of Chinese history. After Yuan Shao's death, Yuan Tan split with his youngest brother Yuan Shang over the successorship to their father's realm. Yuan Tan sought help from the warlord Cao Cao and defeated Yuan...

, who was described as "brave but impulsive and violent". After the combined forces of Yuan Xi and his younger brother Yuan Shang

Yuán Shàng

Yuan Shang , style name Xianfu , was a warlord during the late Han Dynasty period of Chinese history. He was the third son of the warlord Yuan Shao, and succeeded his father...

 was defeated in battle against 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...

 in the follow-up battles after the Battle of Guandu

Battle of Guandu

The Battle of Guandu was a military conflict between the warlords Cao Cao and Yuan Shao in 200 during the prelude to the Three Kingdoms period of Chinese history. The battle, which concluded with victory for Cao Cao, was a turning point in the war between the two warlords...

, he fled to Liaodong with Yuan Shang and stayed with administrator Gongsun Kang

Gongsun Kang

Gongsun Kang was a warlord during the late Han Dynasty period of Chinese history. He became a vassal of Cao Wei during the Three Kingdoms period.-Biography:...

, hoping to one day take over Gongsun's forces and have their revenge on Cao Cao. However, they were themselves betrayed and were killed in an ambush set up by Gongsun, who instead wanted to join Cao's forces.

Yuan Xi's wife, Lady Zhen, was taken as wife by Cao Cao's son, Cao Pi

Cao Pi

Cao Pi , formally known as Emperor Wen of Wei, was the first emperor of the state of Cao Wei during the Three Kingdoms period of Chinese history. Born in Qiao County, Pei Commandery , he was the second son of the late Han Dynasty warlord Cao Cao.Cao Pi, like his father, was a poet...

, while Yuan Xi still lived.