Jia Xu

Jia Xu (147–223), style name Wenhe (文和), was an advisor to the warlord Cao Cao during the late Han Dynasty period of Chinese history. He previously served Dong Zhuo, Li Jue and Zhang Xiu before finally joining Cao Cao. During the Three Kingdoms era, he served as an official in the state of Cao Wei under Cao Pi, Cao Cao's son and successor.

Read more about Jia Xu:  Early Life, Serving Zhang Xiu, Serving Cao Cao, Serving Cao Pi and Death, Family, Appointments and Titles Held, Modern References