The contradiction is that Du Yiyi boycotted to attend the party before, and when Hua Shuai did not convince her, she appeared at the party herself. Judging from Du Yiyi's personality, it is almost impossible. Even if Du Yiyi suddenly figured it out, she would not attend the party without invitation.

Su Cheng believes that this turning point should be an important clue to unraveling Yu Hua's death.

Zuo Luo agreed: "Someone enlightened Du Yiyi, and at the same time, this person knew the character of the party host very well. Otherwise, Du Yiyi would not be allowed to attend the party without being invited. At the same time, this person also understood the relationship between Du Yiyi and his classmates. Otherwise, it would make Du Yiyi lose some confidence that he had easily."

Su Cheng said: "And, this person is someone that Du Yiyi trusts very much. Even Hua Shuai didn't convince Du Yiyi. His ability to convince Du Yiyi means that the relationship between the two is not ordinary."

Zuo Luo said: "Chemistry top."

Su Cheng: "Chemister."

Teachers love top students.

...

The chemistry teacher is a thin and gentle man in his fifties. Faced with the interrogation, he admitted that he encouraged Du Yiyi to attend parties and socialize. On the day of Yu Hua's death, the chemistry teacher was indeed at school, but the chemistry teacher said that Yu Hua's death was eleven at half past night, and he and two students were doing experiments in the laboratory of the chemistry building.

The two students were senior high school students. They confirmed that the three of them had dinner together and then practiced in seclusion on a scientific paper. First, they proved their discovery theoretically, and then they proved their discovery from experiments. They had been in the experimental area since 8 o'clock. During this period, the chemistry teacher left for about 20 minutes at 10:50, saying that they were going to the underground garage of the chemistry building to get the test items. At 11:30, they started the experiment. It was not until one o'clock in the morning that they left the chemistry building together and found out that someone jumped off the building.

Coincidentally, the elevator monitoring from the laboratory to the garage under the ground broke down that afternoon and was repaired on Sunday. The laboratory was next to the elevator and there was no monitoring.

Although there was a proof, the seventh group did not believe it at all. Because for the sake of silence, the chemistry teacher confiscated the two's cell phones. The only way for the two to see the time was the wall clock on the wall. The back of the wall clock was wiped cleanly, and it was impossible to know if anyone had changed the time.

Does the surveillance think it is destruction? A few days have passed, and the surveillance of the chemistry building has not been included in the investigation of physical evidence. The physical evidence group cannot confirm whether the surveillance was man-made. In the eyes of the seven groups, the chemistry teacher stole time and killed Yu Hua. According to the chemistry masters, the chemistry teacher is very good to the culprits. According to their original words, they are truly dedicated teachers and are quite protective of the child. A famous surveillance was bullied, so he settled the accounts with the bully and asked the bully if he knew that the person you bullied might become the next Mendeleev? He believed that educators have the obligation to protect talented students, give them the best environment and treatment, so that they can become people who contribute to mankind. After Du Yiyi lost the scholarship and scholarship, the chemistry teacher also consulted the people from the Academic Affairs Office to see if they could reassess the exam in a month. He said that Du Yiyi, the child, is one of the most talented students he has ever taken.

Let’s look at the disciples of this chemistry teacher. There are two who have become famous contemporary young scientists. One of them is a major member of a famous European scientific research team. This team was once nominated for the Nobel Prize in Chemistry. Although they were not selected in the end, they are already quite powerful. When this disciple was interviewed, he gave the honor to his chemistry enlightenment teacher, that is, this chemistry teacher.

But even if the chemistry teacher is a saint, he will be punished if he commits a crime, Su Cheng and Zuo Luo have the same views on this. Zuo Luo is the defender of the law, and Su Cheng is the defender of the rules. You can do bad things, but don’t be caught. What should I say? It seems that Du Yiyi is a good person, and Yu Hua is a bad person. In fact, Yu Hua is like a person who does housework, and he is blamed for making mistakes. Du Yiyi is like a person who does not do housework, so she will not make mistakes. The students’ understanding of the two is subjective. The chemistry teacher protects his son entirely because Du Yiyi is a top chemistry student and has talent.

Su Cheng was sure that Yu Hua would never let Du Yiyi die. Du Yiyi himself needs to bear great responsibility for Du Yiyi's death.

In addition, Su Cheng likes this kind of case very much. Su Cheng hates passionate crimes and has no technical content. This time it is obviously a premeditated crime, which is a time to test his own ability. The success rate of premeditated crimes is very high, especially for middle-aged men, even if they do not have a criminal manager, they will consider it carefully. For Su Cheng, it is a challenge.

Su Cheng guided the investigation direction, and the chemistry teacher became the biggest suspect. The most urgent task is to find evidence to sue the chemistry teacher.

This was another tedious job. With the cooperation of the criminal police team and the police station, the seventh group obtained some video data. The first video data, on the third day after Du Yiyi's death, the chemistry teacher drove to Yu Hua who was about to go home. After talking through the window, Yu Hua got into the chemistry teacher's car.

The chemistry teacher defended this. He was the teacher in the two classes Yu Hua and Du Yiyi. Yu Hua's grades were above the middle and his grades declined after the start of school. The chemistry teacher asked her to talk to her in private, and the chemistry teacher sent Yu Hua to the single apartment rented by Yu Hua.

The police asked the chemistry teacher before, but the chemistry teacher denied having a private conversation with Yu Hua.

The second image shows that the chemistry teacher appeared in the hospital in City B. After being learned from the police station in City B, the chemistry teacher paid 5,000 yuan for the temporary workers in the hospital to modify Du Yiyi's information.

The chemistry teacher explained that she found something wrong with Du Yiyi. After a private conversation, the chemistry teacher suggested that she go to City B for an abortion.

However, during the previous interrogation, the chemistry teacher insisted that he did not know that Du Yiyi was pregnant.

The third image is the scene where a chemistry teacher's neighbor, a newly retired scout followed Yu Hua. The scout confessed that it was the chemistry teacher who asked him to follow Yu Hua and asked him to take Yu Hua's cell phone away.

The chemistry teacher explained that he only learned after he went to City B that Yu Hua took Du Yiyi's medical record and obtained the mobile phone to delete the information, which was also to protect Du Yiyi.

Zuo Luo asked: "Teacher, why don't you hide anything else? Why don't you tell me together? We have worked very hard too."

The chemistry teacher apologized: "I'm sorry, I've caused you a lot of trouble. I have nothing to hide. I'm just trying to save my job, please forgive me."

Zuo Luo shook his head: "I'm sorry, I can't forgive you. Now I am officially accusing you of murdering Yu Hua on behalf of the police. This is a criminal detention notice."

The chemistry teacher said: "Shouldn't it be an arrest warrant?"

"We need to make up for investigation."

When the police filed a lawsuit and explained the charge, the Chemistry teacher officially became the suspect and was restrained by Meda. On this basis, additional investigation was conducted and sufficient evidence was provided to the prosecutor. The prosecutor would issue an arrest warrant, and the police had no right to issue an arrest warrant. Once a criminal detention was filed, they could apply for a search warrant to the court to search any private or common property of the Chemistry teacher. However, the criminal detention time was limited, generally 48 hours, and it could be applied for an extension, generally no more than three times. After the time, if the prosecutor believes that the evidence has not met the requirements for arrest, he would refuse to issue an arrest warrant and could only release the Chemistry teacher. Moreover, the Chemistry teacher could not be detained for this case. However, the arrest warrant could be issued directly after the additional investigation.

The chemistry teacher received the criminal detention notice, sighed softly, and said, "To be honest, I really want to kill Yu Hua, who knows the truth, but you overestimate the courage of an ordinary person, especially a scholar. I did not kill Yu Hua."

...

Watching the chemistry teacher be taken away, Su Cheng touched his forehead: "Zuo Luo, why are you trying to get into a stubborn position with me this time?"

Zuo Luo packed up the information: "Maybe because you are right every time."

Su Cheng shook his head: "I still have confidence in thinking that he is the murderer, but I hate that you put your treasure on me. Just like a child expected by parents, I hope that my parents will be reluctant to live with me, and my occasional glow will make them happy."

"I have long been desperate for you, a child." Zuo Luo said: "If you leave a sound, there will be traces. Why? Because I believe in you this time, you are no longer confident?"

Su Cheng nodded: "It seems like this."

...

The chemistry teacher has shares in a company, a real estate, a garage, and a member of the fishing association club. All industries need to be searched and found that there are long hair, hair follicles are checked, and hair follicles are checked, and hair follicles are not compared. Mobile phones, computers, cloud disks, social software, bank accounts, etc.

48 hours passed. During the search, the police found that the chemistry teacher used computer social software to contact a foreign student. The contact content was deleted and the data was recovered by the technical department through the help of the social software company. The chat content was probably that the student was a gangster. He was in jail for two years and later settled in Italy. He was not a trouble-free person in Italy and had something to do with the local gangsters. The chemistry teacher contacted him and asked him in a vague way, but it can be seen that the chemistry teacher was asking about some tips for destroying corpses and mentioned the ganese. The student told him that the ganese could do anything, but the price was very high, and if he wanted to contact the ganese, he had to ask his friend's boss for help. The chemistry teacher said forget it. The student asked the teacher if he had any trouble, and even if he said, he would help. The chemistry teacher said it was okay.

The second piece of evidence against chemistry teachers is that the chemistry teacher actually has a lock-opening tool for professional thieves at home, and also finds a pair of rubber gloves sealed in the toilet tank in the bathroom. You can know what a professional lock-opening tool is when you read the news. Professional thieves use such tools to open a door with a one- or cross lock at the same time as the key.

The chemistry teacher interrogated the chemistry teacher admitted that his purpose was to get Yu Hua's mobile phone. He said that Yu Hua would go to the indoor swimming pool of the rented single apartment every Wednesday and Thursday night. He wanted to take the opportunity to enter Yu Hua's apartment and take away his mobile phone. However, because he was not brave enough, he failed.

The circumstance evidence has been very rich, and several perjury from the special chemistry teacher put him in a disadvantageous position.

"It's all circumstantial evidence. Is there any direct evidence?" Zuo Luo asked everyone at the meeting: "For example, when the incident occurred, the chemistry teacher appeared in the teaching building, or before and after the incident, the chemistry teacher met Yu Hua and communicated?"

Everyone remained silent, and Song Kai asked: "Boss, how sure are we at the moment to have these evidence?"

Zuo Luo said: "It is 20% certain that there is really no new evidence. The prosecutor is willing to sign an arrest warrant. However, in court, as long as the other lawyer is not blind, you can know that these are all circumstantial evidence. At most, it can prove that the chemistry teacher really wanted to kill Yu Hua, but did not take action."

Su Cheng said: "The chemistry teacher is fifty years old this year. He can be said to be full of students all over the world. Students from all walks of life have them. Since he is interested in buying evil and contacting Italian students, will he suddenly remember that there are bad students in the local area, and maybe he can help him do it?"

Zuo Luo shook his head: "I don't know how to be so horny. Either he is innocent or he does it himself. It's a very simple logic. If a chemistry teacher buys evil, he will definitely create a perfect evidence of absenteeism that will not be suspected."

Su Cheng nodded and admitted: "It makes sense. This case is a bit of a dead end... Has the physical evidence team inspected the Hua Apartment and confirmed that the chemistry teacher did not enter the too Hua Apartment?"

Zuo Luo looked at the time: "At around three o'clock, they should go there now. Su Cheng, let's go and have a look. You can organize the information and visit what should I visit."

Zuo Luo said something weak, and everyone muttered in their hearts.

...

When he got into the car, Su Cheng naturally raised questions. Zuo Luo said: "Su Cheng, I think your trick is not good. It's really not good. It's not right. I feel that I have strength and no place to use it."

Su Cheng asked in confusion: "Then you should stick to your own style of doing things."

Zuo Luo said: "Brother, you have slapped the face many times. If I don't accompany you to get stubborn, am I stupid?"

Su Cheng said: "Have I told you that in the autobiography of Big Pineapple, it is mentioned that detectives sometimes need the help of luck to solve cases? Moreover, for murder cases, the detectives' case solving rate is not very high, even if the most famous detectives have the highest case solving rate of only 70%. Of course, except for 100% in China, the rate of police in other countries is lower in murder cases."

Murder, thinking and action-ready, and at least some anti-detection methods will come up with.

Zuo Luo said helplessly: "I hope the physical evidence group can give me some good news now."

The physical evidence team is looking for clues, fingerprints, DNA, footprints, etc. in a single apartment. There is basically no fingerprints with rubber gloves. Although the weather is stuffy and you will sweat when you sneak in, sweat is a broken DNA. You must do a linear DNA identification, and you also need some luck.

Yuhua's apartment has been searched in advance, especially the computer, but there is no carpet-style search, and there is no special attention to anything else. So, luck comes and something is found in the teddy bear.

But is this good luck or bad luck?

The physical evidence group picked up the thing and saw it. They were so scared that they were scattered. They threw it on the bed and shouted: "Retreat, everyone will leave immediately..."

Paralysis, what is so nervous? Su Cheng stretched out his head and saw that it was a very professional glass tube with a small piece of metal inside. The glass tube had cracked. Both ends of the glass tube were metal covering the glass tube, and there was a nuclear warning sign on the socket. So Su Cheng turned around and ran away, stumbled...

News: In order to retaliate against a girl, a college student gave her a necklace, and three policemen came into contact with the necklace. The college student died quickly by radiation, and the three policemen were tortured by illness for several years to this day.

Shrimp write

Popular Science:

News: News broadcast by formal official media. Roadside news: Unofficial media reports.

I only added two or three times in June. It’s not that I don’t want to add more. There are too many things to do in the end of the naughty child. The next one is the most terrifying summer vacation. Two children cannot be kept at home every day, and my wife has to take the children to play. What should I do if I buy vegetables, housework, and cook? Now a few people in the family are out to play, and it’s really inconvenient to have no car. As a driver, I can only leave some papers for June to July, and ensure that they are updated every day.

Finally, I would like to remind you that a child is enough...
Chapter completed!