官渡之战
In 200, when the warlords Cao Cao and Yuan Shao clashed at the Battle of Guandu, Liu Biao wanted to rally troops from the commanderies throughout Jing Province (covering present-day Hubei and Hunan) and send them to attack Cao Cao and assist Yuan Shao. When Huan Jie heard about it, he went to see Zhang Xian (), the Administrator of Changsha Commandery, and told him: