李建成
In 619, Li Yuan sent Li Jiancheng to attack the peasant rebel leader Zhu Shanhai (祝山海), the Duke of Huxiang. Li Jiancheng defeated Zhu. Later that year Li Gui, the Emperor of Liang, was captured in a coup by his official An Xinggui (安興貴), who then surrendered to Tang. Li Yuan sent Li Jiancheng to welcome An and to escort Li Gui to Chang'an, where An was executed by Li Yuan.