The illusion and reality of the crime master The murderer is the painter Zhao Qiang. According to the relevant data, the fibers extracted from the neck ligature marks of the deceased were examined and found to be nylon fibers. The police summoned Zhao Qiang and Li Maoshan again, but could not contact Zhao Qiang. The police rushed to Zhao Qiang's home and found him cutting his wrist at home, and then he was taken to the hospital. When he woke up, he was interrogated again. During the trial, Zhao Qiang confessed to the fact that he killed the dead.