Cyber punk is an emerging science fiction category, and the young science fiction writer Yang Ping is one of the representative writers of Cyber punk in China. Yang Ping’s fiction MUD-hacking Incident gives an effective digestion to the network world, through the impact and confuse of the network world to the real world, and the virtual nature, even the illusory nature of the network world. Thus, it realizes the return of the real world, at the same time, it realizes the return of the human nature at the deeper level.