Episode 8 recap: Zhang Qing's murderer was apprehended.

After a year, the case of the murder in the urban village J was finally cracked. The suspect, Sun, was the deceased's university classmate, and he had pursued the deceased during their university days. When Yang Hui saw this news, she was shocked. She took out the manuscript that was stored in an old box, which also had a copy of "Black Rain".

Gu Ji Ming brought a pot of succulent plants to visit Su Zhen Zhen. Su Zhen Zhen's temper was still very irritable, and she indiscriminately yelled at everyone to get lost, including Gu Ji Ming. Gu Ji Ming didn't say a word, just put down the succulent and left. But he was persistent, coming every day to bring a pot of succulents, and gradually the windowsill of the sickroom was filled with them. This went on for half a month, until Su Zhen Zhen got used to him coming every day. Then one day he didn't show up, and the next day when he came, Su Zhen Zhen asked him why he didn't come the day before.

Gu Ji Ming said he had been on a business trip, but Su Zhen Zhen felt that Gu Ji Ming had intentionally not come, just to make her wonder. Even so, faced with someone who came to see her every day, Su Zhen Zhen eventually let down her guard and, for the first time, let him take her out for a walk.

Gu Ji Ming used his own experience to persuade Su Zhen Zhen to let go. Although Su Zhen Zhen didn't show much response, she asked Gu Ji Ming to call her Su Zhen Zhen instead of Miss Su from then on.

On April 12, 2019, Shi Luo and Jiang Guang Ming were dining at one table, and Xu Kang, fearing to anger her, sat at another table far away. Shi Luo persuaded Jiang Guang Ming to call Xu Kang over, but when Jiang Guang Ming did so, Xu Kang politely refused and went back to his original table. Xu Kang then reminded the people at the next table not to smoke, almost sparking a conflict. Shi Luo then displayed her police badge, immediately subduing the arrogant behavior of the other party. Afterwards, Jiang Guang Ming scolded Xu Kang, and the next second received a call from Liu Qiang, informing her of a major breakthrough in the Zhang Qing case, with her university classmate Sun Bin as the main suspect.

Sun Bin was expelled from university for harassing Zhang Qing, and later worked in a printing factory. A fire broke out at the factory, and Sun Bin's face was burned.

Jiang Guang Ming and Shi Luo returned to Qinjiang and saw Sun Bin's ID card, remembering that when she was a household registration policeman, Sun Bin came to apply for an ID card, and at that time his face was burned, leaving a deep impression on Jiang Guang Ming.

It is said that Sun Bin is very dependent on his mother, so Jiang Guang Ming and Shi Luo staked out near his mother's house and followed his mother to an Internet cafe. Jiang Guang Ming was discovered, and Sun's mother shouted loudly and held Jiang Guang Ming, but fortunately Shi Luo was crouching by the back door of the Internet cafe, and he finally caught Sun Bin.

Sun Bin confessed that he had killed Zhang Qing, and he felt that Zhang Qing deserved to die. On the summer solstice of June 21, 2012, Sun Bin took flowers to confess to Zhang Qing, and Zhang Qing let him borrow a tissue, making Sun Bin feel that she liked him, so he mustered up the courage to confess. However, he was rejected by Zhang Qing, and in an emotional state, he attacked her. He was then controlled and later expelled from the school on charges of indecency.

On the day of the incident 18 years later, Sun Bin sneaked into Zhang Qing's home, and Zhang Qing cried for help. In a panic, Sun Bin strangled her with a dog leash. When he was wiping the floor, he saw someone at the door and chased after them, wanting to cover up the crime, but was pushed into the water by the other person. Jiang Guang Ming immediately signaled to Shi Luo, and Shi Luo showed Sun Bin the photos of Gu Ji Ming and Tang Xun, confirming that the person who pushed him into the water was Tang Xun.

The case has gradually become clear. Tang Xun thought he had killed Sun Bin, so he did not dare to report it. Moreover, Tang Xun himself had cancer, and the tremendous psychological pressure and fear accelerated the deterioration of his condition. Although the case was solved, Shi Luo felt a sense of emptiness. Seeing the news about Gu Ji Ming, he suddenly decided to sell the adaptation rights of "Black Rain" to the film and television industry.

After talking with his mother, Jiang Guang Ming decided to temporarily put the divorce matter on hold, and she communicated with Xu Kang about it. After the vacation, both Jiang Guang Ming and Shi Luo were concerned about Jiang Na's whereabouts, and Jiang Guang Ming pestered the director to let him go to Fanghai to investigate.

When Yang Hui, Tang Xun's wife, saw the news of the case being solved, she realized that something was wrong. She dug out the file folder, which contained Tang Xun's manuscript and a copy of "Black Rain".