A visiting professor at Wuhan University who mentored both Xu Yanshi and Lao Gui due to a college CTF competition. Their team also included Zhang Yi and Feng Jun from his university. He once said over dinner that Xu Yanshi is the one he worries least about among all the boys, predicting he will be back. He also said a man's true character shows when he is at rock bottom, and that the most valuable trait is not taking it out on others.
