晋出帝
During the subsequent Later Jin, Li Gu became an imperial censor with the title of "Jiancha Yushi" (). When Shi Chonggui, the nephew of the founding emperor Shi Jingtang (Li Siyuan's son-in-law), served as the mayor of then-capital Kaifeng, Li Gu served as an assistant to him, as well as "Taichang Cheng" (), the secretary general of the ministry of worship. Subsequently, when Shi Jingtang himself took up residence at Yedu (鄴都, in modern Handan, Hebei) for some time and left Shi Chonggui in charge at Kaifeng, Li Gu was given the additional title of "Yubu Yuanwailang" (), a low-level official at the minister of public works (工部, "Gongbu"). When Shi Chonggui was subsequently made the mayor of Guangjin (廣晉, i.e., Yedu), Li followed him to Guangjin and continued to serve as his assistant.