"Listening to Chen Jiao, the body was first discovered by Yang Xue. The two of them came to the classroom together, and when they arrived in the corridor, Chen Jiao tied a shoelace, which was later than Yang Xue. When she walked to the door, she found Yang Xue fainting on the ground, her upper body in the classroom. And there were puffs of white smoke wafting out of the classroom. She hurried to see what happened to Yang Xue, and as soon as she looked up, she saw the classroom filled with smoke, Qi Lan hanging on the ceiling fan, facing the door, her eyes closed, and the corners of her mouth were still smiling. Chen Jiao only glanced at it, and felt a little dizzy and had difficulty breathing. Chen Jiao hurriedly dragged Yang Xue out while she was still a little sober, and after being far away from the door, she felt that her breathing was easier, so she hurriedly called someone for help. After a girl gave Yang Xue artificial respiration, Yang Xue also woke up. Now, the classmates are rumored that Qi Lan's ghost is still in the shadows and wants to borrow his life! ”

"The ghosts are not gone? Still borrowing life? Jiang Tian smiled disdainfully, "Do you believe this kind of nonsense?" So go and get a rope and hang yourself too, and in three hours if you can come to me for a life, I will believe you. ”

"It's true, Chen Jiao saw it with her own eyes and said it with her own mouth. You should know that Chen Jiao is a person, how could she make up these words to deceive people? Moreover, many students at the scene also saw it. ”

Also, Zhou Hao's words are true, Chen Jiao's personality Jiang Tian also knows, and there are so many pairs of eyes, it is impossible to see them all wrong.

"Where's Chen Jiao?" Jiang Tian asked.

"After she finished talking to us about this, she was taken downstairs to the police car by a policeman, and Yang Xue was also taken over."

"So, what about Pang Zhenjun? Did he get it? Jiang Tian suddenly remembered that he hadn't seen Pang Zhenjun all along, so he immediately asked Zhou Hao.

"After Lao Pang found out, he stood outside the classroom for a long time, with red eyes and tears, and did not speak, he stood for about half an hour, said that he was not comfortable, and went back to the dormitory."

"How could so many things happen overnight?" Jiang Tian sighed.

After a while, the principals, Dai Zhuo, Shen Sen, and Xu Ang, walked out of the classroom. Principal Dai comforted the students present a few words, saying that he would definitely give an explanation to the students, and if he knew any clues, he would also come to the principal's office as soon as possible to provide them, and now let the students go back to the classroom first, and do not disturb the police to handle the case.

Then, two policemen came out carrying a dark green body bag. When the students saw this, their faces showed different degrees of fear, and they all avoided it, and inexplicably vacated a road for two policemen to carry the body bags through.

Jiang Tian looked at the body bag, breathing a little short.

After a while, Jiang Tian walked over and came to Shen Sen and Xu Ang.

"Brother Xu, is your phone broken? Do you want me to let Brother Shen send you your salary first to buy a mobile phone? Jiang Tian said with a smile.

Xu Ang smiled bitterly and didn't speak, so he had to give Shen Sen a look secretly.

Shen Sen raised his eyebrows, a slight smile flashed on his serious face, and then he straightened his face again, "Well, Xiaotian is you, what's the matter, you didn't hear Principal Dai's words just now, why don't you hurry back to the classroom." ”

"This is my classroom." Jiang Tian pointed to the class card of the third (1) class of high school, put away his hippie smile, and stared at Shen Sen, "I want to ask, how did Qi Lan die?" ”

"No comment."

"Brother Shen, I'm not saying that I have to investigate anything, nor do I mean that I doubt your ability, it's just that the deceased is my classmate, and I don't want to wait for the result in such a daze."

"Xiaotian, I know your feelings." Shen Sen paused for a moment and continued, "The deceased Qi Lan hanged himself, but I think there are still some doubts. The rest is now inconvenient to tell you. However, I promise to do my best to find out. ”

Seeing what Jiang Tian wanted to say, Shen Sen was a little annoyed and left directly, no longer giving Jiang Tian a chance to speak.

Xu Ang patted Jiang Tian on the shoulder, comforted him a few words, and then followed Shen Sen away.

Jiang Tian was helpless and sighed.

The students dispersed one after another and returned to their respective classes, while the students of the third (1) class of high school cautiously walked into the classroom, deliberately bypassing Qi Lan's seat.

A few classmates who were close to Qi Lan's seat moved their desks away.

Soon, a large area was vacated around Qi Lan's seat.

The desk was like an island.

I don't know who said it: Qi Lan was hanged on this electric fan.

In an instant, the ceiling fan was empty.

Throughout the morning self-study, Jiang Tian was looking at Qi Lan's seat, full of thoughts, "Why did Qi Lan commit suicide, it doesn't make sense, there is nothing wrong with her these days." Brother Shen just said that there are still some doubts, indicating that this case is not just a simple suicide case. Could it be that someone killed Qi Lan and then disguised himself as a suicide? ”

Jiang Tian had a headache when he thought about it, and slapped his head lightly, "Forget it, I don't want to, go back to my father at night and find out from him." ”

All day, Jiang Tian seemed to be a little absent-minded. In fact, not only Jiang Tian, but also the whole class, they had no intention of attending class at all, and it didn't help for the teacher to shout at the throat on the podium, so he simply let the students study on their own.

"The classroom was smoky, inexplicably fainted and suffocated, and hung himself with a mysterious smile, no wonder Brother Shen said that there are still some doubts in this case." Jiang Tian thought to himself, "Although on weekdays, I go to join in the fun of those small cases, but ...... But this time, it's really dead. ”

Thinking of this, Jiang Tian glanced at Qi Lan's seat, which was empty.

At this moment, Jiang Tian panicked inexplicably, and quickly withdrew his gaze, not daring to look again.

It was the first time he felt that death was so close to him.

Some people say no, no.

Finally after school in the afternoon, Jiang Tian hurried home on his bicycle. As soon as he entered the door, he saw Shen Sen sitting on the sofa and chatting with a middle-aged man with gray hair and a little majesty.

This middle-aged man is Jiang Tian's father, Jiang Cheng, director of the Provincial Public Security Department.

This scene made Jiang Tian feel a little surprised, after all, Shen Sen is the chief captain of the criminal investigation detachment of the H City Public Security Bureau, although he has a deep friendship with his father, but it seems a little unreasonable to come directly to his father at home.

Shen Sen saw Jiang Tian come in, beckoned him to sit beside him, and said with a smile: "Knowing your kid's character, he rushed back in such a hurry, it must be for your school's case, come to your father's place to find out, right?" ”

"Hehe, you found out, Brother Shen, you are really discerning, wise and martial."

"you kid." Shen Sen scolded with a smile, and then straightened his face again, "But, Xiaotian, are you sure you want to make up for this 'big excitement'?" Although I know that this case should go a lot smoother with your help, after all, the deceased is your classmate......"

Jiang Tian just wanted to say something, Jiang Cheng suddenly spoke: "Xiaotian, I know, you have been very smart since you were a child, although many times, you use your cleverness in improper places, and often play some cleverness. But I also know that you are born with a sense of justice in your bones, so you don't help the captains under Komori on weekdays. You said that you want to become a policeman like Shen Sen in the future and eliminate harm for the people, but I think you also know what it means to be a policeman. ”

Without waiting for Jiang Tian to answer, Jiang Cheng immediately said: "It's responsibility, and it's more responsibility than others." As a police officer, you will not only meet people who steal and steal other people's property, but also people who 'steal' and 'steal' other people's lives. You have a responsibility to let the thieves and robbers return their belongings to their owners, and you also have a responsibility to make the murderers pay for the victims' lives! This responsibility is very big and heavy. As a father, I don't want this burden to fall on your shoulders, but as a police officer, I'm happy to have such a good colleague as you. ”

Jiang Tian had already put away the hippie smiling face, and his expression became extremely serious.

"I want to join."

Jiang Cheng's face was a little uncertain at first, but after a while, it was an unprecedented relief.

Perhaps at this moment, Jiang Cheng's heart really realized a term that seemed to be true and illusory.

Destiny.

Jiang Cheng's expression was calm, he got up and left, and entered the study.

With a "snap", Shen Sen threw a file bag on the table in front of Jiang Tian, "This is the file of Qi Lan's case. ”

When Jiang Tian opened the file, Shen Sen said: "The murderer in this case is very smart, and at the same time very stupid. ”

"Murderer?" Jiang Tian stopped looking at the case report, "In this case, Qi Lan didn't commit suicide?" ”

"Of course."

So, while reading the report, Jiang Tian listened to Shen Sen say: "When I first saw the corpse, I also thought that the deceased committed suicide. ”

Jiang Tianzheng flipped to the photo of the corpse, in which Qi Lan had been put down, lying flat on the ground, his eyes closed, and as Zhou Hao said, Qi Lan's mouth was smiling. If it weren't for Qi Lan's pale face, many people would have thought that she was just sleeping when they saw her for the first time.

Maybe it can be said another way, Qi Lan is asleep forever.

Qi Lan is a very good person, enthusiastic, helpful, and serious in learning.

Now, people are dead, as if there is nothing left.

Will people be sad or sorry?

Will people remember, or forget?

How many days later, will not many people remember, only relatives, friends and murderers remain, and this former person is still hidden deep in his heart.

Jiang Tian looked at the photo, his hands trembling a little.

Shen Sen patted Jiang Tian on the shoulder, gave him an encouraging smile, and then continued:

"When I first saw the body, I thought the deceased had committed suicide. There were no visible external injuries on the deceased's body other than rope strangulation marks. According to my years of experience in handling cases, the deceased's eyes were bruised, the base of his tongue was purple, his throat bone was broken, and the rope marks on his neck were inverted in the shape of a 'V', all of which indicate that the deceased was hanged, not that someone else strangled him and then hung him up. ”

Shen Sen picked up a photo of Qi Lan's corpse, "Although it is said that people who hang themselves generally have very painful expressions, Qi Lan's expression is calm and smiling, and it is not unheard of in cases across the country in the past." However, the surveillance video told me that Qi Lan was murdered. ”

"You're saying the killer is the guy in the surveillance?" Jiang Tian picked up a photo and looked at it carefully.

This is a screenshot of a surveillance video in the hallway outside Class 3 (1). In the photo, a man in a black coat and hat is holding out a finger against the classroom window.

Shen Sen took the computer and said while operating: "I retrieved the surveillance video and found that at 9:13 last night, the person in the photo carried a large incubator into the classroom, came out in less than a minute, and then hid at the corner of the stairs. Ten minutes later, Qi Lan appeared at the scene and then entered the classroom. ”

Shen Sen showed Jiang Tian a computer screen with a surveillance video playing.

The video shows that after Qi Lan entered the classroom, the man in black who was hiding in the corner of the stairs also followed into the classroom, and about half an hour later, the man in black left the classroom with the incubator again and closed the door.

After that, he stood in front of the window for about ten minutes, reached out and slid his hand on the window a few more times, and then left with the box.

"He's admiring his work." Jiang Tian took a deep breath.

At this time, the murderer in the video suddenly raised his head and glanced at the surveillance. At this time, Jiang Tian felt as if he was looking at the murderer, so he hurriedly subconsciously turned his face away.

The killer laughed.

Freeze frame.

"This is the most clear physical characteristic of the murderer that we can find in all the surveillance footage." "It's a pity that the hat of the coat covers his face, and only one chin can be seen." Also, other surveillance videos did not capture strangers entering the school, and the murderer should have lurked in the teaching building very early, and waited until the students left for self-study at night, and then came out to commit the murder. After a pause, "So, the murderer is likely to be ......"

"Teachers or students, and should live in the school." Jiang Tian smiled bitterly, "The school gate is closed at half past nine after the evening self-study ends, and after the teacher and students leave the school, it will be closed at about half past nine, and the school monitoring will be automatically closed until ten o'clock in the evening. ”

The smile on the corner of the murderer's mouth in the picture is frozen. He seemed to be laughing, mocking everything, mocking all the people, laughing at their incompetence.

"After a forensic examination of the body, a problem was also discovered: the temperature of the body was very low." Shensen said.

"It's true that a person's body temperature drops after death, but when it drops below room temperature, it's a bit abnormal." Jiang Tian looked at the autopsy report and interjected.

"It's a little bit, it's just abnormal. At that time, the room temperature was 25 degrees Celsius, but Qi Lan's body temperature was actually 19 degrees Celsius, so when I was in school before, I was talking about doubts that referred to this. Later, I looked at the surveillance and realized that it was he who killed. Later, after a detailed forensic autopsy, it was found that the body had been frozen! ”

"Frozen?"

Shen Sen frowned and said, "Yes, frozen...... It's really strange, you can clearly see Qi Lan entering the classroom in the surveillance video, and the murderer also left alone, so how could Qi Lan's body be frozen? Could it be that the murderer later came back and took Qi Lan away? But why do you do so much? ”

"No, we overlooked one thing, the box." Jiang Tian said suddenly.

"You said the box the murderer put in the classroom in the first place?" Shen Sen rewinded the video and stared at the screen, "At first, we thought it should be the murderer's crime tools, such as ropes or something, but this incubator seems to have a capacity of about 40 liters, so a large box should be used for more than just ropes." ”

"Wait, I seem to understand something." Jiang Tian hurriedly said, "The classroom is smoky, suffocating, unconscious, and hypothermic...... Brother Shen, do you feel very cold when you enter the classroom in the morning? ”

It seems to be a little cold, and Xu Ang's kid complained...... Does it matter? ”

"I know, I know what's going on." Jiang Tian was a little excited, but then frowned again, "But, why did the murderer do this?" Why refrigerate her? What was he thinking? What are you admiring...... Wait a minute, yes, he was just drawing, what was he drawing? ”