Since Gu Chen locked up the two biggest suspects, he started the next move.

Investigate all the whereabouts of the two that night.

It can be said that the time of Zhao Mingming's poisoning within 27 minutes can basically be determined to be deliberately planned by someone.

But there are two options in front of them, one is to call Zhang Wen and Han Wenfeng to the police station for questioning, which is the basic operation, and the other is not to startle the snake first, and conduct a relevant investigation of the previous whereabouts of the two before arraignment.

Apparently everyone is in favor of the latter......

"Lao Ding, Zhang Wen and Han Wenfeng's surveillance video, I have to trouble you to run again. Officer Wang held the investigation report handed in by Gu Chen, turned his head and said to Officer Ding beside him.

"I have to run my legs, right?" said crisply, Officer Ding expected Officer Wang to make this move, and said, "Well, the coffee in the dispatch room is good anyway, so it's okay to rub it." ”

Gu Chen and Lu Weiwei turned around together, and saw Officer Ding running there non-stop, still holding an oversized thermos cup in his hand.

"Lao Ding is really unprofitable and can't afford to be early!" Lu Weiwei smiled, quickly looked at her thermos cup, and said in her heart that she could also decorate it.

"Gu Chen, are the two suspects you said reliable?" Officer Wang had some more questions.

After all, when they woke up, Gu Chen and Lu Weiwei had already completed the investigation of all the things that should be investigated.

This is the outcome that Officer Wang would like to see the most......

"Zhang Wen and Zhao Mingming should have the most direct contradiction, because the opportunity to perform on the same stage with John Raul originally belonged to Zhang Wen, who was more skilled, but Zhao Mingming's father and his teacher Wang Dewen gave this opportunity to Zhao Mingming, so the person who most likely hated Zhao Mingming should be Zhang Wen. ”

Gu Chen compiled the information he got from Zhao's father into information, so he deduced that the person with the most motive to kill was Zhang Wen.

"I also agree with Senior Brother Gu's judgment. Lu Weiwei couldn't help but interject: "Everyone knows that it is a rare opportunity to perform on the same stage with the world's top violinist John Raul, especially for young musicians to make a name for themselves, and it has a high value, and this kind of competition is quite fierce." ”

And when Wang Dewen knew that Zhao Mingming's skills were not as good as Zhang Wen's, he insisted on putting Zhao Mingming, who was slightly inferior in technology, on the stage, which is very revealing. ”

Gu Chen also wrote the names of the two on the question board and said: "Since then, Zhang Wen has definitely held a grudge, freezing three feet is not a day's cold, and the contradiction between the two has been going on for a long time. ”

Subsequently, Gu Chen showed Officer Wang the video of the two of them not giving in to each other in the corridor: "Senior Brother Wang, look, both of them are in a posture like fire and water, and the trash talk alone has exploded for a long time. ”

"Hehe, these two guys are really interesting. Officer Wang was also amused by the video of the quarrel between the two, and casually asked, "What about Han Wenfeng?"

He was beaten by Zhao Mingming, saying that he was neither male nor female. Gu Chen said.

"In other words, these two people have also had a long-standing grudge?" asked Officer Wang.

"That's right, at least they dislike each other when they meet, and they say bad things about each other when they meet people. Gu Chen hesitated for a moment, and then said: "But this kind of grievance will not develop to the stage of poisoning, after all, he is not the only one who says that Han Wenfeng is girly, Zhao Mingming, I think Zhang Wen needs to investigate it carefully." ”

"I agree. Lu Weiwei agreed again: "This Zhang Wen's family background has just experienced from peak to trough, and the family still owes debts. ”

"Let's think about it, it was a rich family's salary before, and when the children of these rich families studied art under Wang Dewen, everyone had a balanced relationship. ”

But suddenly one day, I fell into the middle of the family, and I couldn't even pay the tuition fee given to the teacher, and finally had to become a little assistant under the pity of the teacher, and even the performance opportunity that should have belonged to me was ruthlessly taken away. ”

After all, if he could grasp the opportunity to play on the same stage with the world's top violinist John Lauer, he might have become a hit and gain fame and fortune. ”

At this time, Zhang Wen, who originally had the hope of turning the tables, was ready to meet his glorious moment, but a Zhao Mingming came out halfway, and ruthlessly took away the opportunity that originally belonged to him. ”

"The worst thing is that this is still my sworn enemy, can this make Zhang Wen calm down? Anyway, if this kind of thing happens to me, maybe I won't be able to calm down. ”

Lu Weiwei said a lot, analyzed various reasoning for reasons, and Officer Wang was stunned when she heard it.

However, Officer Wang didn't know that these were all the original words that Lu Weiwei said on the way back to the Furong Police Station.

"Yes, Lu Weiwei. Officer Wang was shocked: "Your wave of divine reasoning really impresses me." ”

"Following Senior Brother Gu to handle cases, there is always something to improve. "Lu Weiwei is not greedy, and Gu Chen has to be mentioned at the critical moment.

It didn't take long for Officer Ding, who went to the dispatch room to check the surveillance, also returned.

The hot coffee in the thermos cup was still bubbling hot, and the fragrant taste of coffee made Lu Weiwei sniff her nose: "Lao Ding, have you ever drunk this coffee?"

"Not yet, I'm going to drink it. ”

"Okay, pour me some. Lu Weiwei pursed her tongue, like a little gluttonous cat.

Officer Ding generously poured coffee, and asked Lu Weiwei suspiciously: "I said Weiwei, you are so greedy, can a lollipop trick you away when you were a child?"

"Uh-huh. Lu Weiwei took a sip of coffee and said with a smile: "I'm the best to deceive, especially suitable for being a girlfriend." ”

After finishing speaking, Lu Weiwei secretly glanced at Gu Chen again.

At this moment, Gu Chen had already used the video copied by Officer Ding to start checking Zhang Wen's specific movements yesterday.

This time, Gu Chen did not play in chronological order, but started playing from the time closest to Zhao Mingming's poisoning.

The first video.

It is also the scene where Zhang Wen and Zhao Mingming burst trash talk in the channel, Gu Chen directly clicked out, and then entered the second video.

In the video, Zhang Wen handed over a bunch of car keys to Wang Dewen in the passage the day after tomorrow, and then left after a few simple words.

Then comes the third video.

The scene came to the parking lot, where Zhang Wen drove the imported car and parked it in the theater parking space.

Then, after making sure that there was no one around, he got out of the car and entered the theater.

And at this time, it was also the end of the John Raul recital.

All the VIP audience members got up and went backstage to the Grand Theater, ready to line up for a solo photo with John Lauer.

Seeing this, Gu Chen did not click on the next video, but fell into deep thought.

"Senior Brother Gu, isn't the car driven by Zhang Wen the lead car that was imported? That is, the car that Zhao Mingming drove later. Lu Weiwei also found out that she was bored, and couldn't help but ask questions.

Officer Wang's eyes widened, and he immediately stepped forward to check the situation, and only after a moment did he ask, "This Zhang Wen, why did he drive the same car as Zhao Mingming?"

"Maybe the owner of this car is Wang Dewen, otherwise Zhang Wen wouldn't have to hand over the car keys to him. Gu Chen also expressed this question based on the previous video: "Moreover, before Zhang Wen handed over the car keys to Wang Dewen, Zhao Mingming had already gone to the parking lot, so the two car keys for this car were on Zhao Mingming and Zhang Wen's bodies. ”

"One car key for one person?" Officer Wang looked at Gu Chen beside him in amazement, and said: "Then this car must be Wang Dewen's car, otherwise with the grievances of Zhang Wen and Zhao Mingming, they will not hand over their cars to each other to drive." ”

That is to say, Zhang Wen is very likely to have his hands and feet in this car, and he is also the only person who has driven the car before Zhao Mingming got into the car. Lu Weiwei suddenly felt a burst of deep thought, as if the truth was slowly approaching.

"Since Zhang Wen's car is fine, then how can Zhao Mingming be in trouble? Moreover, the inspection of the vehicle, Forensic Doctor Liu has already given a conclusion, and did not find that there are toxic substances hidden in the car. ”

Officer Wang also denied Lu Weiwei's opinion based on the conclusion of Forensic Doctor Liu last night.

In his opinion, the possibility of toxic substances in the car is extremely low, otherwise any residue could be detected by Liu Forensic Medicine.

Officer Ding blew cool air, put the hot coffee in the thermos cup into his mouth, took a few sips, and said: "This Zhang Wen has been to the auto repair shop before, it seems that there is some small problem with the vehicle, but soon he came out, there is a video in it, you can see it for yourself." ”

Before he finished speaking, Gu Chen had already clicked on the video that was remarked as a car repair shop.

In the picture, Zhang Wen drove the car into a small car repair shop, and not long after, he drove the car away, and was only stranded for 3 minutes.

"What the hell is this guy doing? This is repairing a car?" Lu Weiwei was confused, and said, "You can't fix anything in 3 minutes, right?"

She knows that there are no hours that can't be done, but in the video, the time is indeed 3 minutes.

Lu Weiwei looked at Officer Wang beside her and asked, "Old Wang, what can you do in three minutes?" ”

"This?" Officer Wang was also asked, and hesitated for a few seconds before saying, "It is impossible to change the engine oil in 3 minutes, and it seems that it is possible to add some coolant and wiper cleaning fluid." ”

"And ...... Inflatable?" Gu Chen was reminded by Officer Wang, and his eyes suddenly lit up: "You can inflate the vehicle in 3 minutes." ”

"That's right. Officer Ding agreed: "It doesn't take much time to inflate. ”

At this moment, Gu Chen found out the location of the repair shop, lit up the map of his mobile phone in front of everyone, and said:

"Look, this small shop is very remote, and there are many large car repair shops around the Grand Theater, but this Zhang Wen is reluctant to go near and far, and drives an imported luxury car to a remote shop for repair, or maintenance, which is probably hard to say, right?"

"Senior Brother Gu, what do you mean...... Is this repair shop greasy?" Lu Weiwei frowned slightly, as if she also felt that this was the case: "If there is really a problem with this shop, then we have to go over and investigate it immediately." ”

"It's really unreasonable to drive a luxury car to a small shop in the middle of nowhere. ”

Officer Ding also agreed with Gu Chen's opinion, raised his head and said, "Who dares to hand over an imported luxury car to such an open-air tent repair shop to deal with?"

"So what are you waiting for? Officer Wang got up immediately, he was no longer the salted fish he was at the beginning, and taking immediate action was a good habit that he learned from Gu Chen.

Several people reached an agreement, drove directly for 30 minutes, and finally recognized it on the mobile phone navigation and found the car repair shop in the alley at the intersection.

The entrance was originally built with a rain shelter, which was probably demolished by law enforcement due to illegal construction.

So now there are only a few pillars left, on which are advertisements for various lubricants.

Two cars can be parked at the same time in the storefront, and there is no surveillance equipment around except for the camera at the intersection.

When the owner of the small shop saw that business came to his door, he also took the initiative to come forward and ask: "Comrades police, where is there a problem with your car?"

Gu Chen replied directly, but put Zhang Wen in the video screenshot on his mobile phone in front of the store owner and asked, "This person, did you come to your store last night?"

The sturdy shopkeeper bowed down to take a look, and after thinking for a few seconds, he said lightly: "It seems to have a little impact." ”

"He drove an imported luxury car, and he was only in your store for three minutes. Lu Weiwei stood aside and continued to remind.

The shopkeeper said "oh" and said, "I remember, there was such a person." ”

"And what is he doing here?" asked Officer Wang.

"The one who came to inflate said that the tires were flat. Said the owner of the repair shop.

"Didn't you do anything else?" asked Gu Chen.

The shopkeeper scratched the back of his head, feeling a sense of being interrogated, but he quickly remembered something, and hurriedly said: "By the way, he asked me if there was nitrogen in the store and wanted to add some nitrogen to the tires, I said no, and then he took out a blue vial from the car, said that he did, and asked me to use the gas weighbridge." ”

Gu Chen and Lu Weiwei looked at each other, feeling that this was a bit interesting.

Officer Suhou Wang hurriedly asked, "What about later?"

"Later, I agreed, charged him ten dollars, and he turned on the air scale himself and filled the tires with nitrogen. After recalling for a few seconds, the shopkeeper said, "By the way, he is very skillful, but he doesn't know much about tire pressure." ”

Gu Chen frowned and asked, "How do you say this?"

"Because his tyre pressure was too high, I also reminded him that it was enough, and that re-inflation might lead to a puncture, but he still over-refilled. ”

Then, the owner of the repair shop took out a pack of cigarettes and handed them to Gu Chen, Officer Wang, and Officer Ding in turn.

Several people confiscated it, so he lit it for himself, twitched it with a snap, and said casually: "He didn't listen to my suggestion, so I didn't talk much, anyway, this is not my car, what does it matter to me whether the tire bursts or not." ”

"How high was the tire pressure at that time?" asked Gu Chen.

"It's very high, it's already a serious excess. The shopkeeper said.

"And what about the blue vial of nitrogen later?" asked Lou.

The shopkeeper looked left and right, pointed to a garbage pile in his store and said: "Right there, he said that the nitrogen had run out, I said that this bottle was good, leave it to me, he didn't agree, insisted on taking it, and later saw that when he drove the car to the intersection, he threw the blue bottle from the car into the roadside garbage can." ”

"I was so funny, he didn't want it himself, he wouldn't give it to me, this thing has to be worth some money, I'll just pick it up. ”

After thinking about it, the shopkeeper said, "If you want to take it, but you have to give money, just a little bit of meaning." ”

Lu Weiwei walked over, picked up the blue gas cylinder, and was about to put her nose closer, but was stopped by Gu Chen on the side.

"Senior Sister Lu, let's hand it over to Forensic Doctor Liu for testing first. ”

"Okay. Lu Weiwei nodded, and took out a folded transparent forensic bag from the equipment on her body.

After putting on the white gloves, seal the gas cylinder.

Officer Wang gave some money and asked the shopkeeper to issue an invoice, and the people left in a car.

On the way to the technical department of the city bureau, Officer Wang, who was driving, glanced at Gu Chen beside him and asked, "Gu Chen, what do you think?"

"Maybe this is Zhang Wen's modus operandi. Gu Chen said.

"Let me guess. Lu Weiwei in the back row frowned slightly, and after thinking for a few seconds, she said: "This Zhang Wen may not be filling the tires with nitrogen." ”

"Clever. Gu Chen suddenly grinned: "Senior Sister Lu is right. ”

"That means that this gas cylinder is very likely to contain toxic gas?" Officer Ding was also curious.

Gu Chen nodded and said: "I carefully watched the video of Zhao Mingming after getting into the car, after he entered the vehicle, he opened the car door and squatted in the left front position of the vehicle for a long time, I think he should have found that the tire pressure of the left front tire was too high, so he specially went to deflate." ”

So, this is Zhang Wen's cunning. Lu Weiwei suddenly realized.

Gu Chen nodded and said: "That's right, this Zhang Wen used the stored toxic gas in advance to forcibly inject gas into the left front tire, which had normal tire pressure, and then drove an imported luxury car with seriously high tire pressure and parked it in the parking lot of the Grand Theater. ”

Zhao Mingming, who then rushed to drive the road, found a warning that the tire pressure was too high after starting the vehicle, and then got out of the car and found that the tire was too swollen, so he released the gas from the left front tire to make the tire pressure of the vehicle reach a stable level. ”

"But he didn't know that the left front tire had been filled with toxic gas by Zhang Wen at the moment," Officer Wang said.

"That's right. Gu Chen nodded and said, "At the same time as the gas was deflated, a large amount of toxic gas volatilized, causing Zhao Mingming to inhale the toxic gas unconsciously. ”

But at that time, he did not have an immediate adverse reaction, so he continued to enter the vehicle and prepared to lead the way. ”

However, while driving on the road, with the inhalation of poisonous gas into the lungs, various adverse reactions caused by it, Zhao Mingming began to have serious delirium, and the whole person began to foam at the mouth, which led to the accidental car accident last night, and what happened after that is what we all saw. ”

Gu Chen made his own reasonable reasoning based on the various pictures in the video, as well as the blue inflatable bottle.

Everyone agreed, but the most important thing was that only when the final test results of Forensic Liu came out and proved that the blue gas cylinder contained in the blue gas cylinder was indeed a toxic gas, then all the conditions were valid.

......