After the criminal suspect Wang Eryong was arrested, Cheng Bing encountered a difficult problem.Wang Eryong began to remain silent about everything, and completely turned a deaf ear to Cheng Bing's inquiries.Cheng Bing once had the impulse to use violent means to force the suspect to confess, but his colleague Lin Ying promptly dissuaded him and reminded him that they had recently talked about interrogation discipline, and advised him not to make any mistakes again.This scene demonstrates the importance of professional ethics and enforcement of discipline in the police force.

Pan Dahai, captain of the Second Brigade, who happened to enter the scene at this time, provided a clue about Wang Eryong's whereabouts.Although Cheng Bing had various doubts, due to Pan Dahai's leadership, he ignored the “headache” and other details in Wang Eryong's speech.Wang Eryong finally spoke about his murder of Zhao Xiaomai, but his words were full of disgusting and obscene words.In extreme anger, Cheng Bing punched Wang Eryong, but unfortunately Pan Dahai caught him on the spot.The occurrence of this conflict further deepens the tension of the story.

Unfortunately, Wang Eryong suddenly convulsed in the interrogation room and eventually passed away.This incident attracted the attention of the superior agency Zhou Bureau, who angrily restrained Cheng Bing.Bureau Zhou called Cheng Bing and asked sternly about the incident.Cheng Bing said that Wang Eryong was injured when he was returned to the interrogation room, but he never took action.But in any case, the question surrounding the cause of Wang Eryong's death has never been answered.

All members of Endless Journey are facing investigation by the inspection team.At this juncture, Pan Dahai made an important choice.The forensic report showed that Wang Eryong's death was caused by a blow to the head, but the specific time when the injury was caused could not be determined.This information is closely related to the charges against which Cheng Bing was charged.

Cheng Bing was eventually prosecuted and sentenced to eleven years in prison.Wang Eryong once expressed his discomfort with a headache, but Cheng Bing did not take it seriously. This was one of the reasons why he was convicted of intentional injury.The whole story ends with Cheng Bing's fate, which profoundly reflects the complexity of human nature, the severe test of professional ethics and the pursuit of fairness and justice.