Task: Text Categorization
Input (English): _Before one battle, Xu You defected to this man and revealed the location of an enemy supply depot in Wuchao, which allowed this man to break a stalemate. In 2009, this man's tomb was supposedly dug up in Henan, but controversy exists on whether it is genuine or whether it belongs to one of his descendants. This man was appointed the "General who (+)_ Arranged the Army" of the Army of the Western Garden, which did not last. However, this man later built up the Qingzhou army. His domestic policies included Tun Tian System, which was directed at farmers and helped alleviate results of a locust plague. He is often depicted with a (*) white face in operatic productions, as he is often depicted as a treacherous villain. This man gained the support of Emperor Xiao after a campaign in which he captured Luoyang and defeated Dong Zhuo. This man also defeated Yuan Shao at the Battle of Guandu. In his goal of unifying China, this man was defeated by Sun Quan and Liu Bei at the Battle of Red Cliffs. For 10 points, name this warlord of the Three Kingdoms period, who laid the grounds for the kingdom of Cao Wei.
Output (English): History