Deputy Director of Jialin City Public Security Bureau.A leader who looks serious on the outside but is calm on the inside.Sitting behind the monitor, watching every interrogation and making judgments, he was one of the main leaders of the task force established for the No. 45 bus bombing case.Through the interrogation of the bombing survivors Xiao Heyun and Li Shiqing by the criminal police captain and team members, they gradually clarify their ideas and find the truth together.