she's a rose she's a gun

At around 10 o'clock the next night, Yang Dongliang returned to the office and conveyed the results of the investigation to them.

"Civilization, you are talking about it." He pointed to the text on the notepad and said.

The crowd listened nervously.

"The cause of the explosion was indeed fireworks, but after identification by the forensics department, it was found that the cigarette at the scene was ignited after the explosion."

"What?!" Several people shouted in unison.

Yang Dongliang nodded: "In other words, the explosion was not caused by that cigarette. The criminal police in Xihu District are still investigating whether there are other open flames at the scene."

"It was almost another murder case that was misjudged as an accident." Xiao Han sighed.

Yang Dongliang mockingly said: "It's too early to draw conclusions. Maybe there are other unnoticed open flames at the scene. It's quite sad to say that the criminal police in Xihu District were very reluctant to listen to me. To them, this case is not obvious, but the friends of the deceased's studio repeatedly emphasized that she is not someone who would light cigarettes in places where fireworks are piled up, and I insisted on asking them to investigate thoroughly, and only then did I make a new discovery.

The gang of criminal policemen in West Lake District also cast admiring glances at me. I had no expression other than a wry smile. Back then, if Sha Xiaoqin hadn't signed the voluntary letter to donate the body, wouldn't we have closed the case presumptuously. Yang Dongliang covered his face with his hands, thinking that because he had not solved Sha Xiaoqin's case so far, the murderer continued to kill rampantly, and he fell into self-blame.

Wen Wenming looked at the expression of the 1.8-meter-five man, and couldn't help but feel sore. She stepped forward and patted Yang Dongliang lightly: "Master..."

Everyone in the crime detection team fell silent.

The next day, everyone was busy from morning to night, at six o'clock in the evening, they gathered in the conference room to summarize today's work progress.

"Let's talk about me first. Both Sha Xiaoqin and Zhang Jiage are relatively popular figures in the entertainment industry without any taint. Therefore, they have participated in many commercial performances, evening parties, ceremonies, and press conferences together. So far As far as the investigation is concerned, there is no non-working relationship between the two of them, and nothing else can be found out for a while." Big Biao spoke first with some annoyance.

"I checked the surveillance cameras near Sha Xiaoqin's house today, but unfortunately most of them are broken. The location of that place is too far away, so no witnesses were found." Xiao Han continued.

Wen Wenming bit his lower lip: "I started with Sha Xiaoqin's body, and I can confirm that it was a natural death caused by the lack of oxygen in the air. I also asked the criminal police in West Lake District, and they said that Zhang Jiage should He died from an explosion, and no other possible cause of death has been found on the remains."

Yang Dongliang nodded: "I read the records of yesterday's bombing case. At about 23:[-] p.m., the staff of the Minshan crew found a warehouse explosion and immediately called the police. At that time, the fire truck had just arrived and was trying its best to put out the fire. After the fire was extinguished, the firefighters found the injured Zhang Jiage from the rubble and sent him to the hospital immediately. However, he died on the way. There was nothing suspicious in the whole process, West Lake District Detectives are still looking for other possible sources of fire in the warehouse, but nothing has been found so far."

"...That is to say, there is still no progress..." Xiao Han said this.

"You can't say that, at least some things have been confirmed." Da Biao reassured.

"Master, there will be a memorial service for Zhang Jiage at seven o'clock later. I have agreed with Mu Yang to let her take me there, maybe I can find someone suspicious." Wen Wenming reported to Yang Dongliang.

Yang Dongliang nodded: "It's a good opportunity to focus on observing people who behave abnormally at the scene. If you really don't find any, ask her relatives and friends to see if there are any missing clues."

"Yes!"

At [-]:[-], Wenming changed into a black suit and showed up at the memorial service on time.

As soon as she got out of the car, she saw Mu Yang. Today, Mu Yang was wearing a long black dress, a black windbreaker, a pair of gray boots, and a pair of sunglasses, but he still couldn't hide his sad expression. .

When queuing up to enter the arena, Wenming pretended to be casual and stood behind Mu Yang.

Mu Yang also saw her when Wen Wenming got off the car. She was dressed in a black suit that was well-fitting, and her ponytail was tied high on the back of her head. It could be seen that she had been tidied up but was still a little messy. She seemed to have lost weight again after a few days of seeing each other. few.

Wen Wenming avoided the reporter's camera, and quietly poked Mu Yang in the back: "I'm coming."

Mu Yang nodded slightly, indicating that he saw it.

"Are you okay? Teacher Zhang has a soul in heaven, and I definitely don't want you to be so sad for her." Wen Wenming gently comforted Mu Yang.

Unexpectedly, when Mu Yang heard this, his mouth puckered, and he almost shed tears again.

"Crackling, crackling——" Suddenly, a burst of firecrackers startled everyone present.

Civilization turned his head quickly, and saw wisps of smoke rising from the building in front of the memorial service, and two huge balloons floating in the wind with banners hanging indistinctly on the balloons.

"Everyone, don't panic. The shopping mall in front is open. Please keep quiet, thank you." The host of the memorial service quickly explained.

"Really, they are holding a memorial service, and they opened their business. It's too disrespectful."

"I can't help it. After all, their shopping malls haven't violated the law, so we can't force them not to open." Wenming heard two people talking quietly behind him.

With a sound of "stretch--", Wen Wenming felt a string in her head was broken. She stuck it to Mu Yang's ear, said softly "I'm sorry I left earlier", and then quietly left the queue to enter the arena, along the She slid to the door by the wall, and when there was no one around, she ran away.

Behind her, Mu Yang's right ear was red from the blow, but her worried eyes followed her to the door until Wen Wenming's back disappeared into the crowd.

Wen Wenming reached out to hail the taxi, and at the same time hurriedly called Xiao Han.

"What's wrong?" Xiao Han's nervous voice came through the phone.

"Give me the phone number of the physics teacher, hurry up!" Wen Wenming yelled at the driver, "Go to the Donghu District Police Station", and hurriedly dialed the number.

"Hi teacher, I'm Han Pengyu's colleague, and I have something else I want to ask you..."

When Xiao Han entered the office, he saw Wen Wenming meditating in front of the whiteboard.

"Civilization!" he called out.

Civilization turned his head and asked in a little surprise, "Why are you here?"

"You're so anxious, I thought you must have thought of something, so come back and have a look. I also called Captain Yang and Big Biao, and they will probably be here soon."

As soon as the words were finished, Yang Dongliang and Da Biao walked into the office together.

"Wing Wenming, Xiao Han said you have a clue, what is it?" Yang Dongliang asked as soon as he came up.

Civilization hesitated for a moment, but still made up his mind and said: "It's just my guess at the moment, but I think 90.00% of the murderer used hydrogen."

"Hydrogen?!" The other three asked in unison.

"That's right." Civilization nodded. "I just asked my physics teacher, when the volume concentration of hydrogen in the air is between 4.0% and 75.6%, it will explode when it encounters a fire source; and when the oxygen content in the air is less than 20%, hydrogen occupies more than 75% , leading to death by suffocation.”

"So..." Yang Dongliang pointed to the case on the whiteboard.

Civilization replied affirmatively, "Yes, I also asked the physics teacher. It is indeed impossible to drain the oxygen in the room that Xiao Han asked before, but if hydrogen is delivered to the room, it is very likely to cause suffocation in a short time. The murderer only needs to send the hydrogen into the bathroom through the exhaust fan, and then block the exhaust fan from the outside, completing a nearly airtight environment. After Sha Xiaoqin died of suffocation, he removed the things blocking the exhaust fan, and it was completed. his murderous plan."

"But no open fire was found at the scene of Zhang Jiage's case. What's going on?" Da Biao asked.

"Big Biao, it's late autumn now, will you be caught by the doorknob when you open the door?"

"Yes, I was shocked when I came in just now... ah!" Da Biao suddenly realized.

"It's static electricity." Yang Dongliang took over the words: "As long as the hydrogen concentration in the room is high enough, a little static electricity will cause a hydrogen explosion. I have taken over a similar case before, and it was because of frictional static electricity that caused the hydrogen balloon to explode and hurt people."

Civilization nodded: "But these are still my conjectures, and I can do experiments to prove it tomorrow."

Yang Dongliang pondered for a moment, then knocked on the table: "Okay, go back to sleep tonight, starting tomorrow, Xiao Han and Wen Wenming are in charge of asking experts to test the feasibility of our conjectures on the two cases, and Da Biao will continue to look for Sha Xiao The relationship between Qin and Zhang Jiage, now it should be certain that the murderer is related to the two of them."

"Yes!"

"Master, I have another idea." After Yang Dongliang assigned the task, Wenming asked seriously: "Can you investigate the cases of casualties caused by hydrogen explosions in the past year? Don’t let it go, the police may miss it, but the hospital should have relevant medical consultations.”

"Why only investigate the bombing case? Do you want to go through the suffocation case again?" Xiao Han interjected.

"I don't think it's necessary for the time being." Civilization shook his head. "People's understanding of things is from shallow to deep. Most people know that hydrogen balloons will explode when they encounter fire, but not many know that hydrogen can cause suffocation, so I think the murderer should have witnessed the hydrogen explosion at the beginning. It was only then that I thought of the method of using hydrogen gas to kill people, and after in-depth research, I found that hydrogen gas can not only cause explosions, but also use suffocation to kill people without attracting attention in a confined space with few people."

Yang Dongliang touched his chin: "I understand, I will investigate this matter myself tomorrow."

Everyone realizes that the truth and the murderer will be revealed soon!

The author has something to say:

That's right, the physics novice is talking about myself. . .The above modus operandi is purely my own nonsense, please do not mislead everyone.

Next chapter preview: Civilization realizes something is wrong...