During the day, Niu Er took the initiative to find Li Er, hoping to report Boss Yao and surrender.After he explained everything in detail to the police, some people questioned the authenticity of his easy surrender, and decided to investigate in depth from the awakened Yao Laosan.Han Zhengfei accepted this task and went to the interrogation alone.At first, Yao Laosan resisted cooperation and wanted to take sole responsibility for the crime, but when he heard that his brother would be investigated, he revealed some clues.

Yao Laosan quickly told him about the 116 gold mine, which was obtained by chance from the miner Zhang Gong and was extremely valuable.The transaction was originally planned to be carried out at Ma Wenwen's wedding, but when Zhang Gong was attacked during the transaction, Ma Wenwen unexpectedly appeared and witnessed everything.Yao Laosan ordered someone to capture him, but he was imprisoned. The matter of the gold mine was left to the police to explore on their own.

Ren Zhonghua returned fully armed to find his son Ren Leile, and gave him a new phone number and cash.Ren Leilei couldn't bear seeing this and wanted to surrender with his father, but Ren Zhonghua believed that the time had not come yet and was afraid that the Public Security Bureau had an undercover agent from the Ma family. He would make a decision after finding out the truth.

Afterwards, Ren Zhonghua visited Xu Qiuyu, Yao's mistress, to find out her whereabouts.Xu Qiuyu remained tight-lipped.On the way home, Ren Zhonghua was assassinated and fell into coma. When he woke up, he found a murder at home and a gold nugget stolen from the toilet.Han Zhengfei waited for the police to arrive, and Xu Qiuyu described the suspect's image.

Han Zhengfei brought his belongings to Aunt Fan's house to inquire about Ren Zhonghua's situation. Aunt Fan revealed that Ren Zhonghua and his son lived in a cabin for the past two days and forged ID cards. Han Zhengfei felt that the situation was serious and vowed to bring them back safely.

The next day, Xu Qiuyu was kidnapped by Jiang Hao's men while riding in a car. They forced her to reveal the secrets of 116 and offered him millions in cash and the opportunity to escape danger as bait.Seeing that her backer had fallen, Xu Qiuyu wanted to reveal the truth.Han Zhengfei and others arrived, but the suspect had fled.

While everyone was discussing, Ma Wenwen's autopsy report was released.After Han Zhengfei had a brief understanding, he went to the scene to investigate in person. He found an abnormality in the opposite window and found bullet casings. He concluded that in addition to Ren Zhonghua and his son, a fourth person was present at the time of the crime.Han Zhengfei began to believe that Ren Zhonghua had not killed Ma Wenwen, and knew that he was secretly aware of the situation and deliberately guided everyone.Tai Yongyi decided to merge the investigation into the 116 case and the Ma Wenwen case, and Han Zhengfei personally led the team.When Han Zhengfei saw Tan Yixiao, he asked him why he stayed in Yangquan.

At this time, Ren Zhonghua was secretly knocked down by an electric shock baton. Zhou Miao and others witnessed it and followed him on bicycles to explore the truth.Ren Zhonghua woke up and found that he was kidnapped. Ma Wenshan showed up to avenge his daughter and questioned him sternly.