The next morning, the police find that Long Zhang left a white sedan at the residence of ting li. He returned home with a suitcase full of heavy objects, and then went to the scenic area. The police believe that the owner of the white sedan is one of the company's colleagues, and they decide to investigate the car. They find that the trunk of the car is very clean, and that long Zhang washed the car before he returned it. They conclude that he is now a suspect in the murder. They look for him, but cannot find him. They discover that ting Li has paid for a paternity test. They also find out that the test was conducted on the same day as the wedding, which means that the paternity test was done on both of them. They finally have the evidence they need, a corpse burial spot. Captain wang and the men have lost their way, and the police decide to head into the mountains to capture him.