Du Xing was from Zhongshanfu. He was born with an ugly appearance, thus earning him the nickname 'Demon face'(鬼脸儿). Once, he went to Jizhou to trade and killed a fellow trader and was arrested. Du Xing spent his time in prison by chatting with the chief jailer Yang Xiong about martial arts, and they became good friends. In the end, Yang Xiong managed to get Du Xing out of prison.