Episode 22 recap: Cheng Bing continued his investigation.

Liu Wen Fang rushed over, very anxious, and said that Cheng Bing wanted to reconcile with his daughter. He actually let someone else get close to him. That Wang Miao Miao is the daughter of Wang Er Yong. Cheng Bing must have known how Wang Er Yong died. Now that they are together, how can he feel at ease?

Wang Miao Miao came back with Tong Tong. Tong Tong called Cheng Bing "dad" and rushed over to hug him. Cheng Bing was also very excited. Cheng Bing and Tong Tong came to the nursing home to see Wang Miao Miao and the others. Wang Da Yong's mother is still confused and mistook Cheng Bing for Wang Da Yong.

Other relatives came to bring them ginger candy. Wang Da Yong's mother was very excited and said that her son couldn't eat ginger because it would kill him. Cheng Bing quickly went over to mediate and said that the old lady's mind was a bit unclear. Cheng Bing looked at the ginger candy and thought about the package of ginger candy he saw near the forest cabin. It didn't belong to Chen Lao Nian, and it was unlikely to be Wang Da Yong's. That means there was another person in the cabin.

When Cheng Bing arrived at the hospital, he asked the doctor and was told that allergies can indeed be hereditary. Cheng Bing shared this clue with Pan Da Hai and said he wanted to investigate the forest cabin again. Cheng Bing arrived at the forest cabin and found the package of ginger candy. Chen Lao Nian said that no one had come here at that time. He had been alone here all year round, so he couldn't have been unaware if someone had come.

Cheng Bing pointed out that the production date of this ginger candy was around the time when Wang Da Yong came here. In other words, it didn't belong to Wang Da Yong but someone else, and it was during that period.

Chen Lao Nian carefully recalled and said that if Cheng Bing hadn't pressed him like this, he wouldn't have remembered that he had caught a group of poachers and injured one person's leg with a homemade gun. He brought the injured person back and bandaged his leg. Because of heavy snow, the police station couldn't come up, so he had to let the person stay here for a couple of days. The injured person was howling in pain in the middle of the night, and Chen Lao Nian couldn't stand it, so he let him stay with Shao Gang for a while. He had no idea when the person had escaped.

Chen Lao Nian mentioned that Shao Gang didn't come down the mountain until four or five days later. Cheng Bing asked if Chen Lao Nian had any clues, and he said that there was a package left behind by the poacher. Cheng Bing found a delivery slip and learned that the person's name was An Zi. Cheng Bing went to the address on the delivery slip and called Pan Da Hai, saying that Wang Da Yong's fake ID had been stolen, and it was very likely that he would use this poacher to kill him and take his identity. However, because the clue was very vague, the police couldn't send anyone to investigate, so Cheng Bing had to investigate on his own. This was the last chance.

Cheng Bing found the address and discovered that the person named Huang Li Ping was An Zi's mother, but she had already returned to their hometown. Cheng Bing noticed some delivery boxes in the area and asked the homeowner, only to find out that An Zi didn't know his mother had gone back to their hometown and had been sending things here for the past few years, which the homeowner kept.

Based on the address on the delivery slip, Cheng Bing arrived in Jingyang. However, the surveillance footage at the delivery station could only be retained for seven days, and this delivery was sent half a month ago, so he couldn't view the footage. Cheng Bing stayed there as a delivery personnel to investigate the clues. One day while delivering a package, he noticed someone stealing a woman's electric scooter. He chased after the thief but couldn't catch up.

After the woman reported the incident to the police and left, An Ge (An Zi's brother) told Cheng Bing that it was just a scooter and it would be too much trouble to report it to the police.