 It was said that during the Battle of Shulu, Wang Wujun, serving as Li Weiyue's forward commander and believing that Li Weiyue was already suspicious of him, decided not to fight to the best of his ability, and that this led to the defeat.After the defeat, Li Weiyue was even more suspicious of Wang, but his advisors pointed out that there was no one other than Wang who would be capable to command the army.Li Weiyue thus commissioned Wang, assisted by Wei Changning (), to attack Zhao Prefecture, and put Wang Shizhen in charge of security at headquarters.