Zhang Yun

Zhang Yun (張允, rōmaji: Chō In) is either one of Liu Biao or Cai Mao's relatives (nephew in the latter case) who has little historically noted for him.

He first served Liu Biao but after his master's death, he joined Cao Cao's forces with his new master, Liu Cong. Record of Xiangyang remarks he was well liked by Liu Biao and conspired together with Cai Mao. Aside from his surrender, he has no other mentions in history. Zhang Yun has greater significance in Romance of the Three Kingdoms.

Role in Games
In the Dynasty Warriors series, Zhang Yun is a minor officer who is usually paired with Cai Mao. He is optional to defeat at Chi Bi, not serving any major importance.

Romance of the Three Kingdoms
He becomes commander of the Wei navy for Chi Bi. Together with Cai Mao, he was executed by Cao Cao as part of a ploy by Zhou Yu.