Cao Hong
In 217, Liu Bei mobilised his forces and personally led a campaign to seize control of Hanzhong Commandery from Cao Cao. He ordered Zhang Fei and Ma Chao to supervise Wu Lan (), Lei Tong () and Ren Kui () to attack Wudu Commandery, which was defended by Cao Hong. Zhang Fei attempted to trick Cao Hong into believing that they were planning to seal his retreat route, but Cao Xiu saw through the ruse, and Zhang suffered a defeat which absolved him from continuing the campaign – Lei Tong and Ren Kui were killed in action while Wu Lan fled to Yinping Commandery (陰平郡) and was killed by a Di chieftain, Qiangduan ().