I'm a Super Cop

When did Lu Weiwei become so smart? Officer Wang instantly felt that he was a little marginalized?

He looked at Lu Weiwei and Gu Chen. He couldn't help saying, "is it like this?"

"It should be." Gu Chen did not say too much, but analyzed the problem from his own perspective: "brother Wang, I think so."

"We found no dangerous nitroglycerin, no flammable and explosive substances, and no signs of burning."

"But how did it happen? That's like pressure. "

Gu Chen showed him the contents of the graffiti repeatedly reasoned in the transcripts: "look, senior brother Wang, the clues we can find at the scene are only big stones, piano wires tied to glass bottle caps, water and alcohol."

"Put these four things together, you can completely present such a picture."

In order to reflect his reasoning more directly, Gu Chen turned the transcript to a blank page again.

Using my good painting skills, I drew the scene that I had just deduced by using the entry-level imagination on the blank paper.

Gu Chen first drew a glass bottle, then drew some wavy lines at the mouth of the glass bottle, marked as water.

Lu Weiwei is also close to some, eyes straight at the page.

Gu Chen then marked the mouth of the bottle as sealed, and then drew a larger glass bottle outside.

"Gu Chen." Officer Wang was puzzled and asked him, "do you mean to put this sealed and water filled glass bottle into this big mouth glass bottle?"

"That's right." Gu Chen nodded and said, "but now is the most critical time, because I want to put dry ice and alcohol around the sealed glass bottle."

According to his own dictation, Gu Chen drew some square objects between the large mouthed glass bottle and the sealed glass bottle filled with water, which were marked as dry ice and some wavy lines marked as alcohol.

After that, Gu Chen drew a lid on the jar and pressed a stone on it. He tied the stone firmly to the bottle cap with piano wire.

"I see." Looking at the clarity of Gu Chen's paintings, Lu Weiwei's reasoning just now can be reflected in Gu Chen's paintings. She immediately smiles and says, "at this time, alcohol and dry ice are put together, and the temperature can instantly drop to about - 80 ℃

"And the water in the glass bottle freezes and expands, causing an explosion."

After looking at the still damp bookshelf, Lu Weiwei said again: "at that time, this specially treated glass bottle had been secretly put on the shelf when he was on duty in Gaocheng."

"At that time, Liao Feng was inexplicably called away, so there was only Gaocheng in the laboratory. If he was injured, it was very likely that no one could be rescued."

Police officer Wang also went to the bookshelf, and suddenly turned around and said, "it's Zhang Hao, who called Liao Feng away. If the murderer's target is Gaocheng, he certainly won't let others stay in the laboratory."

"Yes, it's Zhang Hao." Gu Chen also snapped his fingers and then said, "this can explain why Zhang Hao was eating with Liao Feng and other friends when Gaocheng was injured."

"Because he cleverly used the difference between the reaction time of dry ice and alcohol to stagger the time of making the explosion."

"And Liao Feng and other Zhang Hao's friends also muddled into his absence at the scene of the witness."

"So it is." Officer Wang's mouth rose, and then he felt relieved and said, "I said, how could the most motivated person not be at the scene? It turns out that he used the properties of dry ice and alcohol to play with our police, and we were all cheated by him."

Gu Chen also said: "at present, the most important thing for us is to find the evidence of Zhang Hao."

"Because there is no dry ice substance or alcohol in this office. If he wants to make this explosion, he must obtain these two substances and complete the arrangement in a very short time."

"So I think he should have simulated it a few times secretly, otherwise it won't be so smooth."

"But since there is a simulation, it's bound to show the horse's feet. After all, we already know that the form of explosion is related to the fusion of dry ice and alcohol."

"But Zhang Hao doesn't know that we know, so this is also an opportunity."

"Yes." Lu Weiwei 200% agree with Gu Chen's opinion: "he Zhang Hao is cunning enough, but encounter us is his bad luck."

"The old man." Officer Wang suddenly looked out of the window, pointed out the door and said, "he is the only one who knows the distribution structure of Nanshan laboratory. Let's call him over to help and investigate the monitoring nearby overnight."

"Yes." Gu Chen agreed.

After leaving the crime lab, Gu Chen and Lu Weiwei went to invite the guard, who led them to the lower floor of the crime lab and met with police officer Wang.

"This is the office where the experimental articles are stored. Because they are all chemical products, the professor usually does not allow us to enter and leave at will. Only when I come to me with the professor's note, will I help these people open the door."At the same time, the old guard took out the key from himself, and then opened the room door of the storage area.

Lu Weiwei takes the lead to step in and turn on the light.

After that, Gu Chen, Wang police officer and the guard finally entered.

"Has anyone been here this afternoon?" Asked Gu Chen.

The old guard scratched his head and thought: "it seems that only Zhang Hao has been here this afternoon. He said that he was going to do some freezing experiment. He asked me to take some alcohol and dry ice."

"You know these things, too?" Lu Weiwei is curious not to.

The guard laughed, waved his hand and said, "Hi! What do you know? I helped the school laboratory in my early years, and I still know some things

"It was Zhang Hao. "Gu Chen smiles at Lu Weiwei and officer Wang, feeling that everyone's reasonable reasoning is right.

It is true that Zhang Hao, the most suspect, has been to the laboratory, and the materials needed are exactly dry ice and alcohol.

This also confirms the previous suspicions.

"Sir." Gu Chen said to him with a smile, "Zhang Hao took away dry ice and alcohol in the afternoon. Do you have any records?"

"Yes, there are." The old man responded quickly, and then found a marked one on a key.

Open the desk drawer at the door and take out a thick record book from it.

"Come here and have a look. All the things that have been in the material room are recorded here, with dates and times." The old man began to look through the latest one.

At this moment, Zhang Hao's record of receiving materials appears at the bottom.

This also shows that Zhang Hao was the last person to collect the chemical before the explosion in the laboratory.

Later, Gu Chen looked through other records, and the time went forward in turn.

It is not difficult to see that in a short period of half a month, Zhang Hao once went to the material room to collect alcohol and dry ice.

In addition, other people get other substances. Although there will be alcohol, Zhang Hao is the only one who gets dry ice.

"That's it." Gu Chen taps on the record book with his hand, and then quickly takes out his mobile phone to take these pictures.

The guard was puzzled and asked Gu Chen, "what do you want from this, comrade police? Is it collecting evidence? Do you suspect Zhang Hao? "

But Gu Chen couldn't tell her immediately. She could only smile and ask, "by the way, is the monitoring on the head useful?"

"Yes, it's all useful. It's useless. What if you enter a thief?"

"Then help us get the surveillance out." Hesitated for a moment, Gu Chen said again: "by the way, just transfer the video of Zhang Hao to get the materials. As for the time, check according to the registration date."

"This..." The guard was a little embarrassed, but he still agreed: "that's OK, but the monitoring room is usually empty at night, but the machines are all on."

"It doesn't matter. We can do it ourselves." She said.

For Lu Weiwei, who often goes to the sub Bureau's control room to rush through the door, she already knows all kinds of operation of these monitoring instruments, and there is no big problem.

The guard immediately removed another key from the key board, pointed to the end of the corridor and said, "the monitoring room is at the stairway. You can check it yourself."

"Thank you."

Since after a short farewell, open the door of the monitoring room.

After that, Gu Chen used the date and time he shot to retrieve various pictures of Zhang Hao.

After finishing all the work, it was already four o'clock in the morning.

All the time, the old man standing at the door, yawned from time to time, and his eyes were full of blood.

See this group of energetic police out, he was relieved to ask: "do you have anything else to help?"

"Where is Zhang Hao's home?" Asked officer Wang.

"It's not far from here. It's the neighborhood over there." In order to give the police a detailed direction, the man outside the door specially pointed to a nearby building and said, "see? On the far left of that building, the twenty seventh floor. "

Lu Weiwei laughed: "I said, you can remember clearly, even the specific location of Zhang Hao's house."

"It's not Zhang Hao who told me. He likes to show off. I can't remember it once, nor twice or three times. But when he just told me the location of his home, he said it ten times before and after, so I remember it." The gatekeeper also told the truth.

Think about the harvest tonight, Gu Chen is also very happy.

At that time, it seems that the doubts at that time have been solved. In the evening, we also collected various evidences of Zhang Hao's taking materials.

In this way, even if he wants to quibble, he will make a lot of mistakes.

"Brother Gu." Lu Weiwei went to Gu Chen and showed him her lady's watch: "it's almost dawn now. Shall we catch it tomorrow?""No, it should be today, and it should be that night." Gu Chen has no room for discussion.

Police officer Wang also agreed: "the more this time, Zhang Hao's energy is less concentrated. At this time, he will be taken back to Furong Branch Office for interrogation, and the effect may be better."

"That's settled." Gu Chen also said.

After a short farewell, the three drove to the surrounding Meilin community.

This is a medium-sized residential area. The house price in Jiangnan City is medium, and the property is not very attractive.

When Gu Chen stops the car at the door, he explains the situation to the security guard on duty and directly kills Zhang Hao's house.

Zhang Hao, who was sleeping in bed, could not calm down any longer. He opened the door with anger on his face.

But when he saw three policemen coming to the door, he froze for a moment, and then he frowned and asked weakly, "police comrade, what time is it? Are you still allowed to sleep? "

Seeing Gu Chen, Lu Weiwei and officer Wang not talking, Zhang Hao said again, "what are you doing here?"

Gu Chen showed his police card to him, and then said, "I am Gu Chen from the third criminal investigation group of Furong Branch Bureau. This evening, an explosion experiment occurred in Nanshan laboratory. Your colleague Gao Cheng was seriously injured and is currently in hospital for treatment. We need your assistance in the investigation."

"So, please come with us." Lu Weidao.

Zhang Hao some incredible, weak asked: "you have any questions, say here ok?"

Gu Chen shook his head: "no way."

Zhang Hao was a little desperate, even angry.

After all, knocking at the door late at night will interrupt people's dream, which is not allowed by anyone.

So Zhang Hao can only admit: "well, you wait for me first, I'll get a dress."

Twenty five minutes later

No.1 interrogation room of Furong Branch.

When Zhang Hao walked into the cold interrogation room, the whole person couldn't help but thump, and then Gu Chen asked to sit on the interrogation seat.

In the middle of the two sides, only a chandelier was turned on, which made the atmosphere very quiet, and even the breath of the other party could be clearly heard.

"What's your name?" Gu Chen opened the transcript and asked him.

"Zhang Zhang Hao. " Zhang Hao's answer is very quiet, but with a little resistance.

"age, ID number." Gu Chen said again.

Zhang Hao can only do as he is told, impatiently complete these fantastic records.

After understanding all the basic information input, Gu Chen looked at the eyes of police officer Wang and Lu Weiwei, and then said, "let's start. Let me ask you a question first. Why do you often go to the material room to get dry ice and alcohol?"

Seeing the first question, Gu Chen hit the nail on the head. Zhang haodun also stayed for a while, but he soon calmed down.

He did not expect that the police would be interested in these two things, and the whole person was a little flustered.

"Zhang Hao, answer me." Gu Chen continued to remind.

Zhang Hao said with a smile: "this Is there a problem with this? I'm doing a freezing experiment recently, and I need some alcohol and dry ice

"You lie." Lu Weiwei, who had already seen through everything, immediately said through the light hanging in the middle of the interrogation room: "we have done an investigation on the scene of the laboratory. From the investigation results, it is very likely that the explosion was caused by dry ice and alcohol."

"This How do you say that? " Zhang Hao pretends to be stupefied and looks at Lu Weiwei.

In principle, the police should be weak in their knowledge of chemistry.

But from Lu Weiwei's tone, it seems that the police have found a reliable clue.

Gu Chen took out his mobile phone, went to Zhang Hao and showed him the pictures in the mobile phone: "this is the record of our investigation on your material collection."

"Most of the time, you get alcohol and dry ice, but no one else has."

"You know, the explosion at night happened to be the fusion of alcohol and dry ice, causing the water in the sealed glass bottle to turn into ice, and as the pressure rises, you put a piano wire around the big stone on the top of the big mouth glass bottle."

"And just after a long mixing of dry ice and alcohol, the temperature starts to drop to - 80 degrees Celsius, and the water in the glass bottle freezes and expands, causing an explosion."

"But Gao Cheng was the only one in the laboratory at that time, because you called his duty colleague Liao Feng away, so he was sitting by the bookshelf."

"But you put the glass bottle next to the bookshelf near the high city, and the huge power of the explosion made the unprepared High City attack, so you fainted on the ground..."

Gu Chen combined his own explosion experiments according to the objects on the scene, and listed them with Zhang Hao.

Zhang Hao was restless. His eyes sometimes looked at Gu Chen and sometimes at the ground.

When Gu Chen talks about the key points, Zhang Hao always sticks up his ears and listens carefully.However, to his surprise, Gu Chen seemed to know these experiments like the palm of his hand, which was no different from his professional knowledge.

"I don't know what happened in the laboratory tonight, but it certainly has nothing to do with me," Zhang Hao said after saying these things

"I was having dinner and drinking with my friends at that time. Liao Feng can prove that. Moreover, I learned later that Gao Cheng, who was on the night shift, was admitted to the hospital for no reason."

See Zhang Hao said a lot, but Gu Chen didn't seem to buy it. He continued to take the picture in his hand and said, "I checked. These days, you are frequently getting dry ice and alcohol. This kind of thing is not that you can get it outside at will."

"And among all the people, only you and Gao Cheng have conflicts. Who do we not arrest you for?"

"This..." It seems that the police are quite clear about his background. Zhang Hao's whole body is in a daze and his body shrinks back.

"What do you all know?" he said with his head lowered and his expression tangled

"We know that you and Gao Cheng are both dating a girl named Han Jing. She is also an assistant in your laboratory. You and Gao Cheng were once in a bad relationship."

"But it's ridiculous. Han Jing seems to be more interested in Gaocheng, so there is an irrecoverable estrangement between you."

"As long as there is Gaocheng in this day, you can't be stable all day. You have to watch Gaocheng and Han Jing communicate with each other. You feel bad."

It is also found that when he mentioned this, he seemed to have touched Zhang Hao's pain point.

Zhang Hao's whole face suddenly looked ugly, and his fists began to creak.

……