"Ahh Is there a man lying there? The security guard pointed to a flat field behind the bushes and said in surprise.

"......" Li Yifan and Jiang Dong didn't speak, they had already been mentally prepared.

Jiang Dong took advantage of the brightness of the security guard's flashlight to stride to the girl lying there, squatted down, and probed the major artery between the girl's neck with his hand, but it didn't beat, and her body was already cold. He turned his head to look at Li Yifan behind him and shook his head. They had expected this result for a long time, the girl was pushed down, and the murderer would definitely come here to make sure that the girl was dead.

"The buttons are brown on one side...... ...... of wood grain One side is black. Li Yifan held the mobile phone with a flashlight, did not approach the direction of the girl, he lowered his head to look in the grass around the flat ground, and emphasized the button on the cuff of the murderer that the girl removed before she died, two tears quietly fell into the grass along his lowered head, he clenched his teeth, not to let himself cry, and not to let the hatred in his heart be too obvious.

"Not here." Seeing that Li Yifan didn't go in and directly checked the girl's body, he thought that the buttons were removed before the girl's death, and they fell down without grabbing them, but he still checked the girl's palm and near the corpse. Then he called the bureau and asked them to dispose of the corpses here.

This girl Jiang Dong knew, and he came to school in the morning to talk to her about the fight outside the school, but he didn't expect that it had only been more than ten hours, and when he saw Qi Xinyu again, he was already a corpse. There is also the teacher named Wu Lianchi, who asked the bureau to find Wu Lianchi's address as quickly as possible, and sent someone to arrest him as soon as possible.

"This ...... How could this be dead? The security guard was a little frightened by the deformed corpse that had fallen on the ground, but when he saw the two people with a calm face next to him, he also calmly followed behind the two people, responsible for shining the flashlight, and at the same time he quickly called and told another security guard at the school gate about the situation here and asked him to inform the school leader, there are teachers and leaders in the gatehouse, and the mobile phone he is holding at the moment is only the phone of the gatehouse.

This time he also recognized Qi Xinyu lying on the ground, and when Jiang Dong asked Qi Xinyu this morning, he was outside the door. "I didn't expect that since this little girl couldn't think about it like this, she saw that she was very low in the morning, but I didn't expect that she would be separated by yin and yang when she saw her again."

"Do you know where it fell?" Jiang Dong walked to Li Yifan's side, looked up at the roof of the teaching building, and asked Li Yifan in a low voice, looking at the grass in front of him, which was not too big, but a brown button the size of a thumb was like looking for a needle in a haystack.

"It should be around here, look over there." Li Yifan also looked up at the direction of the roof, when he came, he was observing the position and direction of the girl's fall on the roof of this teaching building, and when he walked in the direction of the corpse, he had already put the buttons in his pocket, and when Jiang Dong was inspecting the corpse, he fell from the sealed bag into the grass, and the direction he would point to Jiang Dong was where he threw the buttons.

"Found it!" As expected, Jiang Dong found the button at the location pointed by Li Yifan, and the alarm sounded outside the school, and at the school gate in the distance, two police cars with lights on were parked there.

"It's snowing!" Just when Jiang Donggen handed over the work of several police officers, small snowflakes fell in the sky, the first snow of the year.

Jiang Dong led people to block the scene, and the evidence collectors and Li Yifan walked towards the roof of the teaching building, the two policemen had already turned on a large searchlight on the roof, the light was on, the scene was illuminated, and the snowflakes in the sky were more clearly seen by the light, and the grains fell to the ground and disappeared into the rain and snow that had not been dried underground.

……

With the help of Li Yifan, the evidence collection was quickly completed, and Qi Xinyu's body was also brought back to the forensic department. The arrest of Wu Lianchi also went smoothly, and when the police arrived at his house, he was sleeping at home, completely looking like he was fine. Jiang Dong thought that this Wu Lianchi would react somewhat to being caught for murder, but he didn't expect him to behave unusually calmly and look dazed.

At five o'clock in the morning, Jiang Dong interrogated Wu Lianchi in the interrogation room, and he took out Qi Xinyu's photo and placed it on the table. "Do you know the girl in the photo?"

"Wearing our school uniform, it looks a little familiar, it should be a student of our school." Wu Lianchi leaned closer and looked at the photo very seriously for a while, and said calmly with his expression and language.

"This girl fell from the roof of the school building to the south of the school tonight between half past ten and half past eleven." Jiang Dong took out another photo of the scene and put it on the table. "Where are you at this point in time?"

"I'm at home." Wu Lianchi looked like a good old man, pushed the table back into the seat, and his tone was a little puzzled. "I'm just watching TV at home, and my daughter-in-law can testify."

"False testimony is also punishable by jail time." Jiang Dong put the photos on the table back into the file bag one by one, and said without raising his head: "There is no surveillance in that teaching building, but there are at the school gate and in the school, how capable do you think you are to completely avoid the camera?" ”

"I, I, I'm at school, I had a meeting too late today, I fell asleep in the office, I woke up and went home to sleep immediately, I was too tired to look at the time." Wu Lianchi suddenly touched his sleeve a little nervously.

"Didn't you call Qi Xinyu out of the school dormitory? Why is your name on this registration record? Didn't you call her to this school building because of her recent decline in grades, on the grounds of teaching Qi Xinyu, a divorced family member whose relatives were not around? Jiang Dong pointed to the first record sheet he took out, which was clearly written. Grades drop, study freely, and mobilize before the end of the semester. The signature on the back is Wu Lianchi.

"Yes, it's me, I'm just doing what a director should do, caring about these left-behind teenagers." Wu Lianchi pinched his sleeves, suddenly puffed up his chest, and said stiffly.

"What did you all say?" Jiang Dong looked at Wu Lianchi on the other side until he looked at the other party too much.

"It's just some words that the teacher urges the students to learn, what else can there be." Jiang Dong's gaze staring at him made him feel as if his whole person had been seen through, as if Jiang Dong's eyes could see through him the whole process of what happened at night, which made him very uncomfortable. He subconsciously touched his cuff again, there was a button missing, he had already put the button away, but when he got home, he suddenly couldn't find the button in his pocket.

"Are you looking for this?" A photo in Jiang Dong's folder was placed in front of Wu Lianchi, and the photo was a button.