Episode 8 recap: Cheng Bing reopened the investigation.

Zhao Xiaomai's father arrived at the entrance of the police station with a sign hanging on him, claiming that it had been 10 years, and the killer of his daughter still hadn't been found. A crowd gathered around him, taking pictures. Cheng Bing happened to pass by and asked everyone to stop taking photos. Pan Da Hai also received the news and came out. Zhao Xiaomai's father expressed his desire for an explanation. Pan Da Hai mentioned that every year before, they told him to go home and wait for news. There were some things that couldn't be revealed to him. However, today he would make an exception and take him somewhere.

Pan Da Hai brought Zhao Xiaomai's father into the office, where the walls were covered with various clues related to the Wang Dayong case. Pan Da Hai assured him that the police hadn't forgotten about this case and had been investigating it for the past ten years. Zhao Xiaomai's father acknowledged that the police hadn't given up on the case and thanked everyone. He stated that he wouldn't come again in the future.

Cheng Bing came over with a newspaper, which reported on the skeletal remains they had discovered earlier. He believed it was highly likely to be connected to the Wang Dayong case. Pan Da Hai mentioned that at that time, the entire city was on high alert, and Wang Dayong wouldn't have had the opportunity to commit another murder.

Cheng Bing found Wang Dayong's mindset unfathomable. After they raped and killed that girl, he immediately turned to rob public funds. Pan Da Hai stated that whether it was related or not, it was the police's matter. Cheng Bing wasn't a police officer anymore and had no need to concern himself with the case.

Zhao Xiaomai's father went to the cemetery to visit his daughter's grave, and Cheng Bing also arrived. Zhao Xiaomai's father explained that every year on his daughter's anniversary, he would go to the police station to inquire about the case. Initially, they told him to go home and wait for news, and he did so. But later, he became worried that the police had too many cases and had forgotten about his.

Zhao Xiaomai's father mentioned that he had quit his job and traveled around, asking people if they had seen Wang Dayong. Now that he was old, he couldn't continue the search anymore.

Lin Ying and the others questioned the man here. The man explained that they had a dispute after drinking some alcohol, and they tied him up and stuffed him into the bridge cave, intending to teach him a lesson. However, the next day when they went to check on him, they found that the man was already dead. Worried about getting into trouble, they buried him. They never expected to be caught after so many years.

Cheng Bing went to Wang Dayong's hometown to meet his mother. Wang Dayong's daughter, Miao Miao, had already gone out to work. Wang Dayong's mother had a serious illness recently and had become confused. They applied for subsidies and sent her to a nursing home. When Cheng Bing met Wang Dayong's mother, she mistook him for Wang Dayong and missed him dearly.

Cheng Bing summarized all the clues. Liu Zi came to find Cheng Bing and coincidentally witnessed it. He didn't expect Cheng Bing to still want to investigate the case. Cheng Bing advised Liu Zi to think more about what Wang Dayong told him, even the smallest details.

Lin Ying came to find Cheng Bing and mentioned that they had been keeping an eye on Wang Dayong's hometown. So, they were aware of anyone who went to see him. Lin Ying believed that since Cheng Bing was no longer a police officer, he should focus on living his own life, and they would handle the task of apprehending suspects.

Soon, it was time for the opening ceremony of the Beijing Olympics. The members of the Third Brigade gathered together to celebrate. Lao Ma had also retired, and they celebrated for him as well. During the Chinese New Year, Liu Zi gave everyone red envelopes, urging them to spend quality time with their parents and families. Cheng Bing mentioned that there was somewhere else he needed to go and asked Liu Zi to wait for him. He would return and celebrate the New Year together.