 While Wang was en route to Chengdu, however, Chen's subordinate Li Ai () convinced Chen that Wang was not to be trusted, and Chen decided to try to stop Wang's advance.Wang, in anger, refused, defeating officers that Chen sent to stop him and advancing all the way to Chengdu.He was unable to capture it quickly, even with the assistance of Gu Yanlang's brother Gu Yanhui, so both he and Gu Yanhui withdrew to Han Prefecture (漢州, in modern Deyang, Sichuan).