Career
In 189 the general Dong Zhuo had seized control of the Han court. Refusing to acknowledge his authority, the governors and generals of the Han Empire"s eastern provinces rebelled. Gongsun Zan sent Tian Kai to attack Qing province, then controlled by Yuan Shao, appointing him Inspector of Qing.
In 193 Gongsun Zan and Yuan Shao concluded a truce, both sides exhausted after two years of continuous war.
In 194 Tao Qian, Inspector of Xu province, who was under heavy attack from the rising warlord Cao Cao, approached Tian Kai for aid. Tian sent one of his officers, Liu Bei, with a few thousand men to help Tao Qian.
Tao Qian gave Liu Bei four thousand more so Liu Bei shifted his allegiance away from Tian Kai. In 198 Yuan Shao again advanced against Gongsun Zan, winning a decisive victory in 199 in the Battle of Yijing where Tian Kai was killed and Gongsun Zan committed suicide.