Zhang Xiu (c. 205–245), courtesy name Shusi, was a military general of the state of Eastern Wu during the Three Kingdoms period of China.
[2] When Zhang Xiu reached adulthood at around the age of 19, he, along with Zhuge Ke, Gu Tan[3] and Chen Biao, were appointed as attendants of Sun Deng, the eldest son and heir apparent of Sun Quan.
Sun Quan frequently went on hunting excursions and returned late in the evening, so Zhang Xiu wrote a memorial to the emperor, urging him to have better time management.
After Sun Deng died in 241, Zhang Xiu became a Palace Attendant (侍中) and was commissioned as a Commander of the Feathered Forest Corps of the Imperial Guards (羽林都督) and was in charge of inspecting military affairs.
In 241, after Zhang Xiu returned from a battle against Wu's rival state, Cao Wei, at Quebei (芍陂; south of present-day Shou County, Anhui), the Wu general Quan Cong and his son Quan Ji (全寄) accused Zhang Xiu, Gu Tan and Gu Cheng of conspiring with an officer Chen Xun (陳恂) to make a false report about their achievements in the battle.