Mr. Ma is in high spirits after seeing the three new recruits. He tells the police chief that he is disappointed in the company after revealing the social connections. The police chief tells him that the family of three is not disappointed, but a wake up call. He says that the other buyer of the three pieces of jewelry did not find anything unusual in the case. He also says that they will investigate the other buyers of the one piece of jewelry. Mr. Song and Mr. Tang go to the apartment where the last tenant, ting li, lived. They find out that the tenant's friend came seven days ago and canceled the lease. They did not refund the rent, which amounted to two months worth of rent. They also found out that her friend did not leave any personal information or contact details. They asked her to come and cancel the lease herself, but she was too busy to do so. They found her name as jingxu and gave her the address of the apartment.