333–345:Grand General to Guard the West, Inspector of Liang Province, Colonel to Guard the Qiang people, Duke of Xiping(鎮西大將軍 涼州刺史 領護羌校尉 西平公) Zhang Jun (張駿 Zhāng Jùn; 307 – 28 June 346[1]), courtesy name Gongting (公庭),[2] formally Duke Zhongcheng of Xiping (西平忠成公, posthumous name given by Jin Dynasty) or Duke Wen of Xiping (西平文公, posthumous name used internally in Former Liang) was a ruler of the Chinese Former Liang state.
In 320, Zhang Shi was assassinated by his guards Yan She (閻涉) and Zhao Ang (趙卬), who were followers of the magician Liu Hong (劉弘), who had falsely prophesied that he would be the ruler of Liang Province.
[3] (Because Zhang Mao also declared a general pardon at the time, a power normally reserved for an emperor, this was often viewed as the date of Former Liang's independence from Jin.)
Li Xiong agreed to peace and further did not completely rebuff Zhang Jun's overture, but also did not actually become a Jin vassal.
Shi Hu, however, did not appear to consider attacking Former Liang, and, not having to fight Later Zhao for years, by 335 Zhang Jun's domain was described as being so rich and strong and under his capable leadership that it also became overlord over a number of kingdoms in the Western Regions, which offered tribute to Zhang Jun.
In early 346, Zhang Jun attacked the Xiyu kingdom Yanqi (焉耆, in modern Bayin'gholin Mongol Autonomous Prefecture, Xinjiang), and Yanqui submitted to him.
By this point, he was described as having taken the title Acting Prince of Liang (假涼王) and using styles that were usually reserved for emperors.