Former professor of the Department of Political Science and Law of Jianghua University, Hou Guiping and Jiang Yang’s teacher when they were at school.He is the executor of the subway corpse dumping case.In order to avoid suspicion and leave home, he founded Jiangdong Law Firm, which became famous in Jiangtan's political and legal circles.

Zhang Chao found some unreasonable things in Hou Guiping's death test report, but at the time he did not raise any objection in order to avoid getting into trouble.

Years later, Hou Guiping's classmate Jiang Yang became passionate about him in order to investigate the truth, and finally asked Zhang Chao to cooperate with him to complete the corpse dumping case.