A boy was admiring his beauty when he was shot in the back. The deceased's name was Ada, and he was a class bully. Lao Ji surveyed the scene, and he found a bullet on the glass, and according to the trajectory of the bullet, Ada was shot from behind by a short man. Obviously, this person is afraid of Ada, Sister Xi also found a spray-painted fingerprint, there was a spray-painted pattern on the locker outside just now, she thought that the owner of this locker might be a witness.

The counselor said that this was Xiaodan's cabinet, he was often bullied by Ada, and she couldn't believe that Xiaodan's fearful nature would kill. Upon examination, Xiaodan's height did match the characteristics of the murderer, and there were residues of gunpowder on his clothes, and the silver light on them indicated that he had been shot within six hours. But Xiaoshan confessed that he went to a shooting training ground with his sister to practice that day, and everyone at the scene could testify. Before he could finish his sentence, Sister Xiaoshan rushed in, and she warned you to be careful, it seems that she is breaking her heart for this little brother.

Old Ji began to examine Ada's body, he had three bullets in his back, the first one broke his spine, the second one pierced his lung, and the third one pierced his right heart. A deep fork-shaped wound was also found on his left chest, from approximately six months ago. This proves that someone once wanted to kill Ada, and luckily Ada's heart grew on the right side

The counselor found a number of classmates who had been bullied by Ada, and they told him what Ada had done, punching him in the face at the timid classmates and breaking his books at the nerds. Ada didn't even let go of his junior's lunch, and poured it directly, and the junior who couldn't bear it finally broke out, and he stabbed Ada with a fork, which is the origin of the wound on his left chest. But the junior brother said that he was practicing boxing that day, and there was an alibi. The counselor felt guilty and blamed herself for failing to protect the children. She said that she could protect the children from gossip from the outside world, but she couldn't do anything about things in school.

Back in the lab, Xiao He analyzed the gas he collected at the site, and he said that it was all chewing gum. Cigarettes are a common thing in the men's toilet, and Lao Ji just smiled after hearing it. This time, Sister Xi and the sheriff went to Xiaodan's house, it turned out that Sister Xi tested the solidification time of the spray paint, and after testing, the spray paint would solidify within 30 seconds, and the fingerprints on the door matched Xiao Dan's. Sister Xi judged that Xiaoshan touched the locker after Ada sprayed paint, and followed Ah to the toilet. Xiaoshan ran to the toilet and vomited before he finished listening. My sister said that this was the sequelae of Xiaodan's beating, stomach bleeding, and she was very afraid that her brother would commit suicide, but she didn't expect her brother to have the courage to go to school. Seeing Sister Xiaodan's worried appearance, Sister Xi asked, Sister Xiaodan's height was about the same height as Xiaodan, and Sister Xi became suspicious.

And Lao Ji's phone call verified Sister Xi's conjecture, he analyzed the ingredients of a high-end perfume, which is impossible for school girls to use, and the perfume used by Xiaodan's sister is this brand. In the face of questioning, Xiaoshan's sister only said that she was shopping that night and refused to reveal anything, but Xiaodan's father stood up and warned the police not to trouble their family anymore without absolute evidence. When everyone was about to find another clue, Xiao Du came to report the case alone. He admitted to being an eyewitness and insisted that his sister was the one who shot Ada. It was when he and Ada were just about to go to the toilet, and when they saw Ada fixing their hair in front of the real mirror, they fired three shots inside, and he smelled his sister's perfume at the door, and after he was injured, his sister had sworn to himself that she would teach Ada a lesson. But the police investigated her sister's whereabouts, and that night Xiaodan's sister went to the room with Xiaodan's football coach, and she reached an agreement with the coach to change the coach overnight to warn Ada. Hearing this, Lao Ji understood, he told Xiao Shan that the murderer was not his sister at all, but Xiao Shan didn't believe it, his sister was clearly the perfume she used, but Lao Ji interrupted him, it was just the same brand of perfume, Lao Ji already knew who the real murderer was...

Lao Ji put a bottle of perfume on the table, and the person sitting opposite was actually the counselor, and the police had found a gun with a bullet caliber in the counselor's home. The counselor didn't argue too much and confessed to her crime, it turned out that the counselor used to be the vice principal of another school, when a student started killing people because she was ridiculed for many years, and she witnessed all this, and the students fell in front of her one after another, so this time she wanted to kill the signs of the tragedy, that is, kill Ada. Too many children commit crimes because they can't stand the bullying at school, and they boxing at school. Shooting, when you can't bear it anymore, will start to go berserk, and the counselor would rather dirty his own hands to kill than the children to kill people. The counselor said, "I'd rather sacrifice one life for twenty or thirty lives." Lao Ji disagreed, he said that every student in school has a difficult time, but it will always end one day, but for the dead Ada, this period of time ended early, which is too short. When the bell rings, students leave their classrooms and into the hallways, and their dear counselors are leaving them as well...

End of this chapter