Zhang Zuo
That move, however, did not save Zhang Zuo. As Song arrived at the capital, Zhang Zuo ordered that Zhang Guan's brother Zhang Ju (張琚) and son Zhang Song (張嵩) be arrested and killed, but Zhang Ju and Zhang Song instead started an uprising within Guzang and opened the city gates to allow Song Hun's forces to enter. Zhang Zuo's own forces turned on him and killed him. Song Hun and Zhang Ju then declared the six-year-old Zhang Xuanjing the Duke of Xiping—a hereditary Jin Dynasty (266–420)-created title that his family had held for generations. Upon Zhang Guan's subsequent arrival at Guzang, he became the regent, and he instead had Zhang Xuanjing claim the title of Prince of Liang, a title that Jin did not confer, but continued to claim to be a Jin vassal. He had himself made the governor of Liang Province (涼州, modern central and western Gansu) and the Duke of Zhangyi. In early 356, in response to diplomatic and implicit military pressure that Former Qin put on the state, Zhang Guan submitted Former Liang to formal Former Qin authority.