In summer 940, when Shi Jingtang tried to have Li Jinquan the military governor of Anyuan Circuit (安遠 headquartered in modern Xiaogan, Hubei) replaced by the general Ma Quanjie (), Li rebelled and submitted to Later Jin's southeastern neighbor Southern Tang. Southern Tang's emperor Li Bian commissioned his general Li Chengyu () to aid Li Jinquan — but with instructions not to try to retain possession of Anyuan; rather, Li Chengyu was to rendezvous with Li Jinquan and escort him safely back to Southern Tang, leaving Anyuan in Later Jin control. Li Chengyu, however, disobeyed Li Bian's orders and tried to defend Anyuan's capital An Prefecture (). Ma defeated, captured, and executed him. Li Bian subsequently wrote Shi, explaining that Li Chengyu had disobeyed orders. There was subsequent peace between the two states.