A girl happened to pass by, and Wei Chihong stepped forward and asked, "What is the major of that teaching building?" ”

The girl told him that it was the teaching building of the Department of Art and Design and the Department of Sculpture, with classrooms on the first to fifth floors, and offices and studios on the sixth and seventh floors.

Yu Chihong suddenly thought of something, and was about to call Qiao Yan, but Qiao Yan had already run out, and she was out of breath. "I found ...... If you want to monitor the girls' dormitory, that school building is the best place. The last time I came was late at night, so I couldn't see clearly. ”

"I just learned that the art and design department and the sculpture department are in that building. I know what silicone is used for, and I understand why the fourth body is different from the first three, in fact, the murderer just changed the way. Let's go and take a look inside that building. With confident steps, Wei Chihong walked steadily past the construction site and strode into the teaching building.

Qiao Yan sighed behind his back, saying that confident women are the most beautiful, and confident men are so handsome that they have no friends!

After entering the teaching building, Qiao Yan asked Yu Chihong in a whisper, what is the silica gel used for, and he sold it. "If you follow me, you'll see it with your own eyes."

Yu Chihong inquired that the art design department was on the lower floor, the sculpture department was on the upper floor, and the sculpture studio, which was mainly used for creative practice, was on the highest seventh floor, and he took Qiao Yan up by elevator. In the sculpture studio, students work in groups of several to create sculptures, with an old man with gray hair on the side. The old man probably had something going on and hurriedly walked out of the studio. After Wei Chihong waited for him to go away, he stepped directly into the studio. Although Qiao Yan felt that it was inappropriate to trespass like this, she could only follow him.

Most of them immersed themselves in creation and did not react to the arrival of Yu Chihong and Qiao Yan. A few students curiously asked who they were, and Wei Chihong replied that he was here to observe, and the other party did not ask again.

The students recreate the prototype from the real thing, and go through multiple procedures such as clay molding, detail processing, and model reproduction.

One of the teams had completed the clay model of the vase, and Yu Chihong waited patiently for them to process the details and move on to the next step before telling Qiao Yan that the material used in the next model was silicone.

Qiao Yan watched intently as the students brushed the silicone twice on the clay model, and then added a fiberglass brace to the silicone mold. Wei Chihong walked to the window and looked down from the window to see the panoramic view of the girls' dormitory buildings. If you look at the telescope, it is not a problem to peek into the interior of the girls' dormitory.

With a plan in his mind, he left the window and returned to Qiao Yan's side, signaling that it was time for her to go.

The two returned to the Public Security Bureau before the case seminar.

When Zeng Jinling, Qiao Yan and Wan Xing entered the conference room together, Fu Yiming gave them a cold glance, and the eyes of the others were also a little strange. Zeng Jinling shook Qiao Yan's hand encouragingly, and whispered, "It's up to you to publish the criminal portrait later." ”

Qiao Yan gratefully shook her hand back.

"First of all, I would like to ask the Special Investigation Unit to publish a criminal portrait." As soon as the meeting began, Wei Chihong focused everyone's attention on Qiao Yan and the three of them.

Fu Yiming snorted disdainfully, and was about to raise an objection, but Wei Chihong had already expected his reaction, so he spoke up first: "It's harmless to listen more, if you have any opinions, wait until they finish speaking." ”

Fu Yiming didn't speak, only glanced at Qiao Yan with a gloomy eye.

Qiao Yan's heart trembled by that look, she straightened her back, subconsciously took a deep breath, got up from her seat, and opened her mouth as calmly as possible: "The murderer is a man between the ages of 27 and 29, with a car, a high education, and should be good at talking to women and have a good appearance." The murderer had a strong mother-love complex, but when he was young, his mother left him and did not live with him. Each time, the prisoner targeted someone who looked like his mother. He also captured the scene of the crime because he overlapped the scene with his memories of his mother. He wanted to think of the scene of the victim posing in beautiful clothes as a memory of seeing his mother change clothes when he was a child.

Therefore, there are no murder scenes in the films he filmed. What he wants is only images related to his mother, and to process his laughter into a child's memory of the past. Illusions about the mother he loves, as well as hatred for his mother who abandoned him, can be seen through the corpse. He dressed the bodies of the victims according to his mother's taste in dressing. Cutting off the deceased's breast is also a memorial, which is a symbol of the mother. ”

"But the fourth deceased's breast was not cut off." Immediately questions were raised.

"That's because the murderer has changed his ways. Residual silicone was found on the breasts of the fourth deceased, while no silicone was found on the first three deceased. She turned her head slightly, Yu Chihong's gaze shot directly into her face, as soon as she touched his gaze, she suddenly felt her courage doubled, and her voice unconsciously increased, "The murderer made a model of the fourth deceased's breast as a souvenir, as for why he changed the way, he can only tell us himself." ”