in the dawn

After He Lang finished speaking, Jiang Chengyun squinted his eyes and circled a few key points in his notebook, "Old Zhao, is the autopsy report out yet?"

Zhao Xiaohe nodded, and opened the document in front of him, "Song Xiaoyang died from a fall from a high altitude. I checked it briefly. Judging from her posture after death, she had grabbed the railing before she died."

"Grab the railing."

Jiang Chengyun repeated in a low voice, then looked at Su Bei, "What about the investigation on the position of the roof railing?"

"After sampling and investigation, acid residues were indeed found on the railing where Song Xiaoyang fell, and someone did tamper with the railing."

"What substance is it?"

Su Bei shook his head slightly, "This laboratory still needs specific analysis. At present, we only know that it is a corrosive acidic substance."

Su Bei's words made the atmosphere in the conference room tense immediately, and Jiang Chengyun's tone of voice became serious unconsciously, "Peng Ran, how is the school's monitoring going?"

"There is nothing abnormal about the monitoring system set up on the outside of the school. The monitoring system in the corridor of the teaching building was reported for repair a few days ago, but it has not been repaired yet. There is no monitoring system in the classroom."

"It's such a coincidence that even the monitoring is broken." Jiang Chengyun snorted coldly, with a little bit of darkness in his eyes.

Feng Xue secretly glanced at Jiang Chengyun, seeing that the other person's complexion was not good, and slowly exhaled, "Boss, we made simple inquiries to the students in Class [-] of Senior Three in batches."

"The ten students who have been questioned so far all said that Song Xiaoyang is usually very quiet, he is their class monitor, and he does his best."

"It's said that she is a nice person, and she will try her best to satisfy everyone who doesn't ask too much."

"Not too much request, what exactly do you mean?" Qiao Yuchuan paused with the pen on the notebook, and looked up at Feng Xue.

Feng Xue immediately lowered her head and flipped through the book, found a page and pushed it in front of Qiao Yuchuan, "Here's what's written here, to help my classmates buy lunch, help my classmates to be on-duty, and help my classmates carry things."

Qiao Yuchuan stared at all the things, raised his brows slightly, "You can buy lunch yourself, students on duty can do it yourself, and you can move things by yourself."

"They can do all this by themselves, but why do they think they can't do it, and why does Song Xiaoyang agree to do it for them?"

"Maybe she was always willing to help others?" Feng Xue blinked and asked.

Qiao Yuchuan glanced at Feng Xue, "Let's put it another way, you asked ten students, and there are only thirty students in a class, which is not a low ratio."

As Qiao Yuchuan spoke, he raised his notebook, and the pen in his hand was on it, "Seven out of ten people mentioned the item of buying lunch, and all ten people mentioned the matter of being on duty, and the matter of helping to move things." Eight out of ten people mentioned this matter."

"Then let's guess what would happen if these requests were made at the same time."

Qiao Yuchuan's question made Feng Xue open her mouth, but she didn't say anything for a while. Qiao Yuchuan put the notebook in his hand on the table, and picked up the transcript that He Lang had prepared before.

He circled one of the sentences with a pen, "Song Xiaoyang's parents said that she is usually very busy and has almost no spare time after school. So is it because of her studies that keep her busy, or is it something else that keeps her so busy."

After listening to Qiao Yuchuan's words, Jiang Chengyun put the pen in his hand on the notebook, "From the investigation of Lao Zhao and Su Bei, it can be basically confirmed that Song Xiaoyang's fall from the building was caused by human factors. This matter is definitely not suicide, but homicide."

As he said that, Jiang Chengyun looked at Qiao Yuchuan, "From the testimonies of her classmates and parents, it's hard to see that Song Xiaoyang is a very resourceful person, but it is basically certain that she is usually quiet and doesn't like to communicate much."

Qiao Yuchuan pondered for a while, "Sense of disobedience."

"Sense of violation?"

Qiao Yuchuan nodded, "We have analyzed it before, and it is obvious that Song Xiaoyang is not the most suitable monitor, but she has taken the position of monitor. When everyone is not worthy, it is rare for everyone to be convinced. .”

"Classmates and teachers said that she did her best. From their descriptions, it can be seen that Song Xiaoyang has devoted a lot to this class."

"But how much of this is what she is willing to do, and what is the purpose of her willingness to do so."

"Perhaps it's to get the approval of classmates and keep their position as monitor. The children nowadays still have a certain obsession with such honors." Zhao Xiaohe interjected.

Qiao Yuchuan turned his head to look at him, and pushed Feng Xue's notebook over in his hand, "But take a closer look at what a student said, whether there is any approval for Song Xiaoyang."

"In their words, all I can feel is that it should be taken for granted, as if this is what she should do, and the only one who said that she was recognized by her classmates is the head teacher of class one."

"Song Xiaoyang's grades in the senior high school entrance examination were mediocre, and her grades in the first grade of senior high school were also at the middle level in ordinary classes, but she performed exceptionally well in the grade two grading exam for senior high school. It's always been normal."

Qiao Yuchuan shook his head slightly as he said, "This kind of situation usually rarely happens. Even if a person performs exceptionally once, his grades will not be so good, and it happens at the most important juncture."

"So, Song Xiaoyang has too much sense of disobedience."

Qiao Yuchuan's words made Jiang Chengyun fall into deep thought. He tapped his finger on the table a few times, "Feng Xue, expand the scope of the questioning of the students, and check all the classes that Song Xiaoyang has been in from the first to the third year of high school. Someone close."

"He Lang, take someone to visit, neighbors and friends around Song Xiaoyang's house, to find out the specific situation of her house, and arrange a few brothers to monitor Principal Wang and Sun Zehao."

"Su Bei, go and investigate the installation and maintenance records of the roof fence and anti-theft net of Ancheng High School in the past three years."

With that said, Jiang Chengyun glanced at Qiao Yuchuan, "What more information do you need?"

Qiao Yuchuan blinked lightly, "Peng Ran, I need all the test scores from Ancheng High School in the past three years."

"Ok."

"Subei, check all the laboratories of Ancheng High School, check the experimental records and the records of the purchase and use of acidic substances."

Hearing this, Jiang Chengyun squinted his eyes, "Do you suspect that someone stole the acid used in the experiment?"

"This is the safest of all methods. As long as the amount stolen each time is not large, it will be difficult to be discovered. Moreover, there are people coming and going in the laboratory. It is not easy to find out who it is."

"Compared to buying and leaving records, this kind of fishing in troubled waters is the best choice."

Jiang Chengyun nodded slightly when he heard the words, his eyes swept across the audience, his expression was terrified, all the information from this morning's meeting gave him a very bad feeling.

"Everyone cheer up. This case involves underage students. Most of them are high school seniors who are preparing for the college entrance examination. We need to pay special attention. When you act, try to avoid interfering with the school's daily teaching and adjourn the meeting."

When the crowd dispersed, Jiang Chengyun stared at the notebook and looked again and again, his eyes lingering on the circled area for a while, "Do you suspect that Song Xiaoyang's death is related to the test results?"

"At least, Song Xiaoyang's ability to study in the first class has a lot to do with the test results. This may be a breakthrough." Qiao Yuchuan said.

Jiang Chengyun leaned back on the chair, stretched out his hand and squeezed the space between his eyebrows, Qiao Yuchuan sat quietly aside, he knew exactly what Jiang Chengyun was worried about.

Those were still a group of underage children. If the case was really caused by school-campus-violence, it would not be as simple as the death of one child, but the burial of a group of children's youth.

Qiao Yuchuan got up and went outside to make a cup of ginseng tea. When the hot water was poured, a mist rose, and a thin layer of mist fell on his glasses, covering his eyebrows and eyes.

The fog gradually dissipated, Qiao Yuchuan sighed slowly, and returned to the meeting room with a cup in his hand. When he opened the door, he saw Jiang Chengyun was writing and drawing with his head down. Qiao Yuchuan walked over and put the cup in front of him, "Drink some water Bar."

Jiang Chengyun picked up the cup and took a sip, the warmth radiated from the inside out, "If it was a homicide, how did he guarantee that Song Xiaoyang would definitely go to the rooftop, and how could he guarantee that she would definitely be there."

"Maybe it wasn't for killing Song Xiaoyang specifically." Qiao Yuchuan asked.

Jiang Chengyun squinted his eyes, "Kill people indiscriminately?"

"The rooftop is a public area, and anyone has the opportunity to go there at any time, unless he used a large amount of acid to destroy the railing after washing, and then deliberately lured Song Xiaoyang to the designated location."

"And doing so will definitely leave flaws and traces."

"Because whether it's stealing a large amount of medicine at one time, or hiding medicine secretly, it's a very unsafe behavior."

Qiao Yuchuan's words made Jiang Chengyun fall into deep thought. If he really killed people indiscriminately, then what kind of people and things were hidden in Ancheng High School.

While the two were contemplating, Peng Ran walked in from the outside, "Professor Qiao, the transcript you want."

Qiao Yuchuan reached out and took it, "Peng Ran, go and investigate all the information related to Ancheng High School on the Internet, and check Song Xiaoyang's mobile phone to see if there is any useful information left in it."

"Ok."

After Peng Ran left, Qiao Yuchuan took a stack of report cards and started sorting them. Jiang Chengyun looked at him and said, "I'll help you."

"No, you are busy with your work, I can do it myself." The whole morning, Jiang Chengyun and Qiao Yuchuan sat opposite each other in the conference room and sorted out the information.

Anjo High School

After finishing class, Sun Zehao touched the book on the desk, raised his hand and pushed his glasses, "The police will come to interview and investigate everyone in the next few days, so don't be nervous, just say what you know."

"Song Xiaoyang is a good child. Everyone likes her very much. We are very sorry that she died, but we must continue to study and live."