In the afternoon of the same day, Geng Changjiang came to Liu Li, and when they met, he handed Liu Li an inspection report: "This is a sample of plastic film you sent, according to the inspection, the ingredients contained in the two materials are almost the same, and they should be produced by the same company." △¢Top Novel,

However, although the plastic film sample is made of the same material as the plastic film used to wrap the corpse, there is a slight difference: the plastic film that wraps the corpse contains oil and gas, while the sample you sent does not.

We have tested two specific components of this oil and gas, namely polyethylene glycol dioleate and oleoacylsarcosine, which have the effect of sequestering rust prevention and process rust prevention. ”

"There's an oil and gas component on the film? Why can't I see it? Liu Li wondered.

After hearing this, Geng Changjiang couldn't help but laugh and said: "You are a layman, how can you see that thing with the naked eye, you have to use professional instruments to observe."

That kind of oil and gas is not artificially smeared, and this film is often placed in a place with oily items, and after a long time, it will be contaminated with oil and gas, and that thing can not see any abnormality with the naked eye, and only when it is inspected by the guò equipment, can the clues be found. ”

Seeing that he said it in such detail, Liu Li was still puzzled, and Geng Changjiang was a little helpless: "It seems that when you were in school, you definitely didn't pass the subject of chemistry, and your comprehension was really bad."

For example, if you throw a non-smoker into a group of smokers, a day later, when the non-smoker comes home, even though he is not a smoker, his family will still be able to smell the smoke from him.

But if you look at it with the naked eye, you can't find the smell of smoke, you have to use an instrument to check it. To give another example, we all know that newly renovated houses contain formaldehyde, but there is no abnormality visible to the naked eye.

Where does this formaldehyde come from? It is caused by the paint used by workers during decoration, and if the furniture is placed in this environment for a long time, its surface will also be contaminated with formaldehyde.

This is how the oil and gas contained in the plastic film that wrapped the corpse came from. The murderer must have put the film in a place that contains oil and gas, and after a long time, those films will be contaminated with oil and gas emitted in the air, now do you understand? ”

"Oh, that's right, although you said it a little tongue-twisting, I already heard it clearly." After hearing Geng Changjiang's explanation, Liu Li nodded thoughtfully.

……

In the past few days of the case, Liu Li often studied the file materials of some supernatural cases. I don't know if I don't check, I was shocked when I checked it, Shan Chenzhou City, a prefecture-level city, has had more than 30 supernatural cases since the founding of the People's Republic of China, and those cases have not been solved so far.

After reading the case files, Liu Li took the materials of the case and took a closer look, and then he put the witness testimony related to the case. and the suspect's interrogation transcript was skimmed through, in which information about the deceased's call list caught his attention.

Then. He carefully checked all the confessions, and when he was crossing, Liu Li recorded some words and phrases from time to time, and when he finished checking the confessions, a smile appeared on his face.

After putting all the case materials away, Liu Li closed his eyes and pondered for a while. He then left the county bureau and drove to the landlord's house.

According to the landlord, he learned that Feng Jishan was researching high-tech new environmentally friendly materials in other cities, and one of the research contents was related to plastic convenience bags, and their company was researching a kind of contact with soil. A plastic bag that dissolves on its own.

After asking about the details of Feng Jishan's work, Liu Li called Feng Jishan back to his home and asked him if he had the key to the rental house in the Jasmine Garden community? After hearing the other party answer that there was a key, he took the key.

After handing the key to Liu Li, Feng Jishan complained to him, saying that his father was too cautious, and after renting out the house, he was too suspicious, and he was afraid that those tenants would steal the key and come back to steal things, so as long as someone checked out and left, his father would go to match a key.

The key on his body is also often replaced, often this key is not long with it, and the key is changed next month, and each time it is replaced with the lock cylinder, the investment in this piece alone is worth a month's rent.

After listening to Feng Jishan's complaints, Liu Li just smiled, didn't say anything, and asked a few words about the other party's work, and he told Feng Jishan not to leave Guhong County in the near future, and the mobile phone should be turned on 24 hours a day to ensure that the police are on with the message.

Although Feng Jishan was a little dissatisfied with Liu Li treating himself as a suspect, he didn't say much about the murder in his house, saying that he would cooperate with the police.

After seeing Feng Jishan's cousin, Liu Li thought about it, chatted with him a few more words, and then left with the key on his body.

In the afternoon of the same day, Liu Li asked the team members to bring the three suspects back to the criminal police team and personally questioned the three of them.

After the three of them answered, Liu Li left the inquiry room with a disappointed expression, and when he left, he looked at Feng Jishan, Xie Gang, and Liu Linzong meaningfully, and then said lightly:

"I've given you a chance, I hope you can stand up for yourself, but since you still have illusions, then he and I are waiting for you in the interrogation room, and I believe that there, you will confess your crimes."

Ten minutes later, when Liu Li came to the criminal police team again for questioning, he glanced at the three of them, and finally he set his eyes on Feng Jishan, who was like a white-faced little student, and bluntly asked, what did he do on the weekend when the deceased was killed?

After hearing this question, Feng Jishan was a little hesitant for a while, and when he saw this, Liu Li gave an order to the team members around him, and ordered someone to take Feng Jishan to the interrogation room.

When Liu Li interrogated Feng Jishan in the interrogation room of the criminal police team, he asked Liu Linzong and Xie Gang to go back, and seeing that the police had confirmed the murderer, Xie Gang and the two finally breathed a sigh of relief, the two glanced at each other, and then said in unison: "It's good to wash away the suspicion." ”

Knowing that the police had detained their son, the landlord and his wife were immediately startled and hurried to the criminal police team, wanting to see their son, but the team members were instructed by Liu Li that no one could see Feng Jishan without his order.

The landlord didn't believe that his son would be a murderer anyway, and he wanted to ask his son in person, but the police were very tightly supervised, and although he said good things for a long time, he couldn't see Feng Jishan.

In a hurry, the landlord asked people to find a relationship and inquired about his son's situation from the outside, because he was in a hurry to go to the doctor, eager to know his son's situation, so the landlord entrusted a lot of relationships, and as a result, some of his neighbors knew about it.

As the saying goes, good things don't go out, bad things spread thousands of miles, the news of Feng Jishan's detention gradually came out, and after hearing the news, the landlord's neighbors immediately exploded. Everyone is talking about the authenticity of the news.

Most people have the problem of chewing the root of the tongue, and when spreading the news to the outside world, they can't help but process it a little, and after some people add oil and vinegar, things often change their flavor in the end.

Five minutes ago, someone said that Feng Jishan was suspected of being a murderer. Ten minutes later, it was rumored that Feng Jishan had already confessed the killing. After another ten minutes, they were all talking about Feng Jishan having been sent to the detention center, and after another ten minutes, someone heard that Feng Jishan had been transferred to the prison of the city bureau.

Although the rumors from the outside world have evolved into exaggerated, it is an indisputable fact that Feng Jishan has never returned since he went to the Public Security Bureau, and the rumors from the outside world are getting more and more outrageous, and every once in a while, a new version will appear.

Although the inside story of the female corpse case was gag-sealed by the police, many people still heard the news and learned that the murderer had been arrested by the police, and many residents were paying attention to the progress of the case.

When eating, people will inevitably talk about this topic after drinking, and for a while, the news that the murderer of the female corpse case was arrested has become a talking point in people's mouths, and everyone is talking about the inside story of the case.

At about eight o'clock in the evening, Liu Li walked into a small restaurant, looked at the guests in the hotel, and walked straight to a table against the window, at this time, there was a guest drinking alone at the table.

Coming to the table, Liu Li pulled a chair, then sat down by himself, and after pouring himself a cup of tea, he looked at the diners in front of him with a smile: "Mr. Liu is so elegant, he ordered four dishes by himself and asked for a bottle of blue porcelain, did he encounter any happy event?" (To be continued......)