Cao Xi was the second son of Cao Zhen

Cao Zhen

Cao Zhen was a military general serving under the warlord Cao Cao during the late Han Dynasty period of Chinese history. He served the state of Cao Wei during the Three Kingdoms period. He was also a distant nephew of Cao Cao, though the latter treated him like a son. Cao Zhen participated in many...

, an officer who served the Kingdom of Wei 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...

 era of Ancient China. Cao Xi was also the younger brother of Cao Shuang

Cao Shuang

Cao Shuang , style name Zhaobo , was a military general, politician and regent of the state of Cao Wei during the Three Kingdoms period of Chinese history. He was the son of Cao Zhen...

.

Cao Xi was part of Cao Shuang's clan. Aware of Sima Yi

Sima Yi

Sima Yi was a general and politician of the state of Cao Wei during the Three Kingdoms era of Chinese history. He is perhaps best known for defending Wei from Zhuge Liang's Northern Expeditions...

's intentions of usurping power, Cao Xi eliminated the clan to warn his arrogant elder brother to be more alert, but Cao Shuang ignored him. After Sima Yi's successful coup, Cao Xi was executed, along with the rest of Cao Shuang's clan for treason.

See also

• List of people of the Three Kingdoms