Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

Chapter 183 On-Site Confirmation
Most fibers are flammable, but there are also a few fibers that are not flammable or do not burn at all, such as glass fibers.

Polyvinyl chloride fiber is also one of them. Polyvinyl chloride fiber is the abbreviation of polyvinyl chloride fiber, which is often used to make flame-retardant materials.

Because this fiber has good heat retention, heat resistance, and light weight, it is suitable for working clothes in humid environments and field workers.

However, this kind of fiber cannot withstand ironing, does not absorb moisture, has poor electrostatic effect, and is difficult to dye industrially, so it has been rarely used in the textile field in recent years.

Therefore, except for some special work clothes, few people wear clothes made of polyvinyl chloride fibers.

Wang Zihan disappeared and was killed. In terms of probability, the probability of the crime being committed by the people in the surrounding villages is relatively high.

Because there are very few outsiders in the vineyard in the western suburbs, the police from the Xijiao police station ruled out the possibility of abduction by outsiders when they searched for Wang Zihan's disappearance in the early stage.

If the scene discovered by Lu Chuan and others is the first scene where Wang Zihan disappeared, these fibers are likely to be left by the murderer.

As for Wang Zihan, when he died, he was wearing a school uniform, which was made of pure cotton and could not contain polyvinyl chloride fibers.

After recording the relevant experimental results, Lu Chuan began to conduct DNA identification on the purified dander.

The updated equipment is currently the most advanced DNA information identification instrument on the market, and the identification speed is faster than the previous instrument.

In less than an hour, the identification was completed.

"Master! I won the competition!"

"What did you hit?"

Liu Guodong, Lao Bai, and Yang Sen who were busy analyzing other physical evidence ran over.

"Dandruff!"

Lu Chuan handed over the comparative analysis report to Liu Guodong: "The skin flakes and DNA information we found are consistent with those of Wang Zihan. The place where the soil was refurbished should be the first scene where Wang Zihan disappeared!"

Liu Guodong took the report and read it carefully.

"OK!"

Finding the first scene means that the fibers they found are likely left by the murderer.

"How's the fiber analysis going?"

"It's polyvinyl chloride fiber."

"PVC?"

"Yes, it's polyvinyl chloride."

Liu Guodong frowned: "This thing is ordinary plastic."

"These things are everywhere in the countryside, but the fiber filaments we extracted are not in this form of ordinary plastic. The filaments we collected should be textile materials on clothes."

Lao Bai shook his head: "The clothes made by this thing are not breathable, and few people wear them."

Yang Sen echoed: "Except for some special work clothes, there are really not many clothes made of this kind of thing. You can send the results to Ren Qiang and the others so that they can see who wears this kind of clothes during the investigation, and maybe you can narrow down the scope. "

Conference room one.

Ren Qiang held the report sent by the survey office.

"Wearing clothes made of polyvinyl chloride fiber?"

"What clothes are made of polyvinyl chloride?"

Ren Qiang obviously didn't have an intuitive understanding of this.

In fact, the use of polyvinyl chloride fibers is still very extensive in reality, but most of them are used for synthetic fibers.

However, what Lu Chuan found at the scene was a single polyvinyl chloride fiber, which is relatively rare.

Liu Guodong took out his mobile phone: "We found these clothes on the Internet, made of a single polyvinyl chloride fiber. When you check, see if anyone wears these kinds of clothes."

"Especially if it is damaged, it looks like it has been worn for a long time."

Ren Qiang looked at the picture carefully and took a picture with his mobile phone: "There are dozens of families in Beitun, we have almost left today."

"I'll post the photos in the group to see if anyone has seen people in the village wearing these clothes."

"Okay, you want to be busy, there is still a lot of physical evidence to be processed in the laboratory, I will go back first"

We are currently investigating several boxes of physical evidence collected at the scene. Because the first scene has been identified, the scope has been narrowed down.

There is only one box and 43 bags left that have not been processed.

If it is fast, it can be processed in two or three days.

"Let's see, when I visited the village today, did you find anyone wearing the clothes in these pictures?"

"Especially the damaged ones, it looks like they have been worn for a long time."

"@张辉, send it to Sun Jun's team and ask about the situation."

"@任强, received!"

In the WeChat group, Ren Qiang posted the photos given by Liu Guodong.

But Ren Qiang didn't have much hope for this search method.

After all, Ren Qiang has never seen the murderer by relying on a few fibers.

But just because you haven't seen it doesn't mean you can't.

"Brother Qiang...this dress...I saw it today."

Zhang Hui was holding his mobile phone at the moment, pointing at a piece of blue work clothes on it.

Ren Qiang was slightly taken aback: "Where is it?"

"Tanaka made a fortune, and the first one in the west of Tunzi has a silly daughter-in-law. When I went, she was wearing this blue overalls."

"However, his clothes are new, not damaged as you said."

"new?"

Ren Qiang narrowed his eyes slightly.

Isn't it normal to kill someone and change clothes?
"Is there anything unusual about this Tanaka?"

"Tanaka Fa..."

Zhang Hui thought for a while: "There is nothing unusual, he is quite an honest person, and there is a silly daughter-in-law at home..."

"It's unusual...he is one of the few villagers who thinks that Chen Liuzi won't kill the Wang family's children because of the contracting of the vineyard."

Ren Qiang nodded: "Well, let's focus on it and find out if there are any disputes or conflicts between the Tianzhong family and the Wang family."

"Okay, I'll ask some family members tomorrow."

A piece of clothing can only provide clues, but it is impossible to directly lock the suspect.

Early the next morning.

Zhang Hui came to the village early.

After a day of investigation and visits yesterday, Zhang Hui already had a certain understanding of the people in the village.

Aunt Zhang's family is a know-it-all in the village, and she knows a little about everyone's affairs.

"You said Lao Tian's family is a stupid daughter-in-law who doesn't even have a child."

"There is no conflict between their family and the Wang family. The two shops are next to each other with vineyards..."

"By the way, five years ago, when the contracting scope of the vineyard was re-divided, the Lao Wang family and the Lao Tian family fought over the boundary of the land contract."

"Later, I found the village party secretary to adjust."

"Oh, Aunt Zhang, what's the specific situation?"

"Oh, I don't know exactly what happened. It was just that the beating was pretty fierce at the time, and there was blood, but the old Wang's family accompanied the money later, so it was fine."

"What about the relationship between the two families after that?"

"It's okay, the two houses are next to each other, and they are often together. They have a good relationship..."

After Zhang Hui left Aunt Zhang's house, he went to the village secretary's house to learn about the situation back then.

"Old Wang's family occupied half of Tianzhong Fajia's ridge, and it seems to be returned later. It has been several years, and I can't remember the details."

Zhang Hui then visited other villagers who knew about the dispute, and learned more about the ins and outs of the incident.

The most important information was provided by Tanaka's neighbor.

"The matter between Lao Tian's family and Lao Wang's family has not been resolved. In fact, the half of the ridge was made by Tian Zhong. The wife of the Wang family insisted that it belonged to his family. When Lao Tian was drinking last time, he said that he must get the land back sooner or later..."

(End of this chapter)