In any case, when Li Sijian died in 908, Li Yichang claimed the title of acting military governor of Dingnan.[3] Shortly after, Later Liang's emperor Zhu Quanzhong bestowed on him the title of full military governor.[1]
Li Yichang's rule of Dingnan was short. In 909 or 910, his officer Gao Zongyi (高宗益) mutinied and killed him. The officers and soldiers of Dingnan then killed Gao and supported Li Renfu—a relative of Li Yichang's, one generation higher—as the new ruler of Dingnan. Li Renfu was thereafter made the new military governor by Zhu Quanzhong.[3] (Li Yichang's death year was given as 909 by the History of the Five Dynasties[1] and the New History of the Five Dynasties[2] and 910 by the Zizhi Tongjian.[3])