CCI decides not to let Yuyang know the DNA test results. Xiulian goes missing. The hospital CCTV shows her leaving of her own accord. Qingxiong receives a package from a Huixin. She reveals that Deliang, Musen and Guiquan had worked in Ye Tianfu’s hotel 30 years ago, and won some money together. Qingxiong remembers Xiulian’s mother had worked in a hotel as well. He suspects Tianfu is involved in the case. He goes to Tianfu’s house and retrieves an orange seed that Tianfu spits out. DNA analysis proves Yuyang’s father is Rongtao. Incredulous, Yuyang interrogates Rongtao. He alleges that he was tricked by Deliang, Musen and Guiquan into sleeping with Xiulian. When she got pregnant, Deliang married her, but on condition Tianfu give them money. Xiulian attests that the account is true. Yuyang probes into her relationship with Kunxing and asks if she was involved in Deliang and Guiquan’s case. Xiulian does not reply. Kunxing shows up and forces her to leave with him. Qingxiong tries to save Xiulian by himself and is beaten up by Kunxing. He criticises Kunxing for disgracing the police force. Kunxing defends himself by saying he did everything for Xiulian. Kunxing met Xiulian 18 years ago. He killed Deliang and Pacai, and made use of Jiaqiang to get rid of Guiquan all for her. Xiulian admits she hated them after discovering that Deliang had deceived her. Kunxing points a gun at Xiulian. Qingxiong protects her and is shot instead. Yuyang, Junyan and Haifeng rush in and attempt to subdue Kunxing, who manages to escape. He dies after being shot by Rongtao. Yuyang would never have imagined that Xiulian would abet a murder. Ashamed, Xiulian rejects visitors at the police detention centre. Rongtao expresses his wish to make amends and offers to plead for leniency on Xiulian’s behalf. CCI is to be disbanded. Haifeng wants to seek treatment in the US for the complications arising from the explosion. Yuyang plans to join him and take care of him. Junyan remains with t