In order to determine the time when the skull was exchanged, Shen Yi found all the paintings of the students who copied the skull. Several of the paintings were dated the same as the date when Ren Xiaoxuan wrote his diary. In agreement, Du Cheng felt that Tian Lin may have misremembered, but Shen Yi carefully analyzed the influence of light and humidity on painting and concluded that Ren Xiaoxuan's diary was lying, and all of these diaries happened to appear about the boy. description of the child.
He Mingyue found that Ren Xiaoxuan's fatal injury came from the knife on the chest, and no toxic substances were found in Ren Xiaoxuan's skeleton and the nearby soil, but the pelvis of the skeleton was found to contain banyan tree flowers, and other substances that did not belong to Based on the soil composition of the playground, Du Cheng deduced that the first scene of Ren Xiaoxuan's death was not in the playground.
Du Cheng showed Ren Xiaoxuan's painting to Shen Yi. There were a lot of banyan trees in the painting, and one of the paintings with two banyan trees even had a red lip print. Shen Yi accidentally discovered that there was a red lip print. There was another lip print superimposed on it, and then he drew the invisible lip print. Du Cheng felt that the lip print was more like a woman's lips. Shen Yi modified the previous portrait according to the structure of his lips, and the figure finally shown in front of him was actually Qu Lanxin.
According to the investigation of clues, the police quickly found the two banyan trees in the painting. Forensics and tracers found a utility knife buried in the soil among the banyan trees, and extracted blood from the soil. Qu Lanxin cut off her long hair and stood on the roof of the teaching building. Du Cheng, Shen Yi and others came after hearing the news. Qu Lanxin proposed to talk to Shen Yidan.
Shen Yi, who was afraid of heights, walked carefully to Qu Lanxin's side, and Qu Lanxin told Shen Yi the story between her and Ren Xiaoxuan. Qu Lanxin likes to cut her hair short and play basketball since she was a child, so she has always been regarded as an outlier, but she doesn't care. When Ren Xiaoxuan was molested by Zhao Zipeng, it was the appearance of Qu Lanxin that saved Ren Xiaoxuan. Since then, Ren Xiaoxuan has developed a feeling of dependence on Qu Lanxin. Ren Xiaoxuan silently guarded Qu Lanxin's side, and Qu Lanxin also understood Ren Xiaoxuan who was being bullied. The two of them accompany each other like this.
After Ren Xiaoxuan transferred schools, the two often met under the banyan tree, but Qu Lanxin gradually realized that Ren Xiaoxuan's feelings for him were not friendship. Qu Lanxin just looks like a boy on the outside, but she is still a pure girl at heart. In order to let Ren Xiaoxuan come out of the illusion, Qu Lanxin wears a skirt to meet Ren Xiaoxuan. She hopes that Ren Xiaoxuan can face up to the friendship between the two. In a sad life, Ren Xiaoxuan's only hope is Qu Lanxin. When Qu Lanxin broke all this, Ren Xiaoxuan also lost the courage to live, and she stabbed herself with a utility knife. Qu Lanxin tried to rescue Ren Xiaoxuan but was stopped by Ren Xiaoxuan. Qu Lanxin, who did not dare to report the crime because of fear, buried Ren Xiaoxuan under the banyan tree. A few years later, Qu Lanxin returned to the school as a teacher. In order to make Ren Xiaoxuan closer to herself, she transferred Ren Xiaoxuan's skeleton to the playground, and the skull to the art room.
Shen Yi persuaded Qu Lanxin to accept the trial, and the forensic doctor would examine the way of death of Ren Xiaoxuan, and she would get a fair result. Qu Lanxin was handcuffed, and she asked Shen Yi to help herself complete the unfinished line drawing before leaving.
When Captain Lei's death day came, Du Cheng went to an unfinished building to mourn him. There were many paintings by Shen Yi on the wall of this unfinished building, including the portrait of Captain Lei. Chen Qiuwen also came here to mourn Captain Lei. Du Cheng remembered that he had seen her beside Shen Yi when he was investigating the murder of Captain Lei.
After the case of Captain Lei, Shen Yi fell into a feeling of remorse, and he told Chen Qiuwen that he wanted to be a person who changed the outcome. Shen Yi burned all the works, and Chen Qiuwen wanted to persuade him, but since then Shen Yi disappeared from the art circle without a trace.
The sister of the victim of cheating marriage and murder went to the police station to find Director Zhao. Sister Fei wanted to stop her, but Shen Yi happened to pass by. Sister Fei asked him to draw a board newspaper for her, and this issue of the board newspaper was all about Shen Yi, and Du Cheng complained. Shen Yi is narcissistic.