 For example, a Jiaozhi native named Trương Trọng was grand administrator of the Jincheng Commandery.As the Eastern Han dynasty weakened, the Viceroy of Giao Chỉ Shi Xie briefly ruled Vietnam as an autonomous warlord from 206 to 210 AD before pledging royalty to Eastern Wu.When the Eastern Han dynasty split into the Three Kingdoms in 220, Jiaozhi was under the control of the state of Wu.