When the village director saw Ni Xiangdong's photo, he quickly said he didn't recognize him and made excuses to leave.He went out and told Meng Chao and Tong Hao that Xu Caizeng's son Xu Qingli killed Bao Desheng and then committed suicide in fear of crime.When Meng Chao and Tong Hao returned to Xu Caizeng's house, they bought some groceries and sent them to him. The old man was very grateful and hurriedly dug out an old photo with his son from the house and said that his child was soft-hearted and kind-hearted. He did not dare to kill anyone and asked the police to find an explanation for him.

Meng Chao noticed that there was a birthmark on the left side of the boy's forehead in the photo, which was very similar to Ni Xiangdong's.At the same time, Ni Xiangdong climbed to the top of a construction site, skillfully picked locks and lit fires, and deduced on his own who was setting him up.Meng Chao and Tong Hao revisited retired police officer Xu Qingchun. They all agreed that suicides rarely choose such a painful method as self-immolation. Team leader Zhao, who organized the case that year, chose to close the case hastily. No autopsy was allowed in Yafen Village, and Xu Qingli's body was hastily buried.

Xu Qingchun entrusted Meng Chao to find out.The first discoverer, Ma Zai, recalled that the body was burnt black, and there was a blood letter hanging at the scene. The handwriting matched that of Xu Qingli, and the identity was confirmed based on this.Meng Chao decided to open the coffin and conduct an autopsy, and then asked the village director for further questioning.The village director then talked about Xu Qingli's past and believed that Tian Baozhen was probably to blame for him reaching this stage.Xu Qingli and Tian Baozhen were childhood sweethearts. He was a teacher in the village and had a traditional temperament, but Tian Baozhen wanted to go to the city.