Chapter 182 Fiber Experiment
Huh?
Ren Qiang and Zhang Hui looked at each other, what is going on?
They haven’t asked about the specific matter yet, so why don’t they just ask for it?
Dang Cang!
There was a sound of pots and pans falling to the floor in the kitchen, and Chen Liu's wife rushed out immediately after.
"Police uncle, Liu Zi really didn't harm the Wang family boy!"
Chen Liu's daughter-in-law had runny nose and burst into tears, and the nervous police uncle even shouted out.
"Uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu"" >
"You have to make the decision for us!"
Looking at Chen Liu's wife who was slumped on the ground, Ren Qiang and Zhang Hui could not help her, or not.
"Chen Liu, let your wife get up first."
"The matter will be found out. No one will be wronged if you don't kill anyone."
"Really ”
Chen Liu's wife's current expression does not seem appropriate to describe as pear blossoms and rain, but it is quite meaningful.
Ren Qiang sighed and replied: "Really!"
Chen Liu also stood up and helped his wife up: "Why are you crying!"
"I'll kill him Don’t you know that he didn’t kill anyone?”
“Go back to the back room!”
The woman glanced at Ren Qiang and Zhang Hui, agreed to Chen Liu's promise, and returned to the back room with three steps.
Chen Liu smiled awkwardly: "Comrade police, I'm sorry, rural people have never seen the world, so they laugh at you."
"But, I really didn't kill anyone."
“How did you know that we came because we thought you had killed someone?”
“Because on the day the child disappeared, people from the police station also came.”
Chen Liu spread his hands: "Like you, they also asked many people in the village."
"Around the Spring Festival, I almost got into a fight with the old Wang family because of the contracting of the vineyard. "
"They said that I had a grudge against Lao Wang's family and that I had hidden the child."
"In fact, I not only wanted the vineyard of Lao Wang's family, but also I have to go through the old Tian family at the west end of the village, the old Zhang family at the east end, and the old Dong family in the middle.”
“Then I have many enemies, so I can’t let anyone lose their child. Just look for me?”
"Now that the child is dead, you come again and ask the same questions as those asked by the police station. I know that you must be suspicious of the child I killed."
Ren Qiang listened quietly, without refuting, and No more questions asked.
"Chen Liu, people in the village say you don't do your job properly and are idle."
Ren Qiang pointed to the car in the yard: "But I think your family is in good condition. You have everything." Car.”
“Oh, that, my dad bought it.”
"Your wife is pretty, too."
"Oh, my dad married her to me."
"What does your dad do?"
"Village Party secretary.”
“Then what do you do for a living?”
"Rely on my dad."
......
Other than whether Chen Liusha killed anyone, the villagers' evaluation of his idleness was not too inaccurate.
After leaving Chen Liu's house, Ren Qiang turned back and looked at the door.
"What do you think of this Chen Liu...?"
Zhang Hui shook his head: "I don't think he looks like the murderer." "Oh? Is there any reason?"
Ren Qiang continued: "In rural areas, neighbors live with each other for a long time. We all know him well."
"As we walked around, many people said that Chen Liu was suspicious and might be the murderer."
Zhang Hui nodded: "I know this. , but because of this, I feel that Chen Liu is even less like a murderer.”
"First, Chen Liu was in conflict with not only the Wang family, but also several other families because of the land parcel. The relationship was also very tense."
"Second, Chen Liu... had no motive to kill. Ah, he is just an old man who relies on his father to serve as the village party secretary and has no worries about food and drink. Why did he kill the Wang family's children, for money? Or to vent his anger? "
"I don't think it's reliable. "
" Another point is that Chen Liu seems to be a very shrewd person. He and Lao Wang's family almost got into a fight over the land parcel, and everyone in the village knows this. "
" When the Wang family’s children disappeared and died, he must be the most suspected.”
"It's so obvious...isn't it too deliberate?"
Ren Qiang nodded in agreement. Chen Liu was suspicious, but there were too many reasons why this suspicion was untenable.
Many things seem most suspicious, but are actually the most unlikely.
Of course, there will never be a shortage of smart people in the world. On the contrary, there are not just one or two people who do things under the light.
Chen Liu is still the biggest suspect in Wang Zihan’s disappearance and murder.
At half past seven in the evening, it was already dark.
Now surveying the office.
The four people in Lu Chuan are processing the physical evidence collected along the road where Wang Zihan disappeared.
Yang Sen originally asked for leave because a murder occurred, so he rushed back in the afternoon.
“So much physical evidence?”
Looking at several boxes of collection bags in the laboratory, Yang Sen felt a tingling sensation in his scalp.
When will this be analyzed?
"Put the few boxes here first, and we will make these two boxes first."
The five boxes of evidence in front are filled by the people who first collected them. The collection of physical evidence started as soon as Wang Zihan came out of his home, and there were indeed a lot of things.
But after changing the thinking and focusing on the distance after the turn, the physical evidence became much less.
"Xiao Lu, this is the physical evidence found where the soil was renovated. The amount is not large. You have experience in analyzing trace evidence. You will operate these. The three of us will be responsible for the other boxes."
"Okay. , Master.”
Lu Chuan nodded, and what Liu Guodong handed him was the physical evidence analysis of skin scraps and similar fibers found near the refurbished soil.
The amount of physical evidence is very small, but it should be said to be the biggest discovery during the on-site investigation.
The first step is to conduct DNA identification on trace amounts of dandruff.
Although Lu Chuan had never used the equipment in the trace evidence analysis laboratory before, he had experience in using the equipment in the intermediate field investigation skills.
I can’t say I’m very proficient, but it’s not difficult to operate.
As for the fiber, Lu Chuan first separated part of it and prepared for a combustion experiment.
Fiber products all look similar on the surface, but due to different compositions, their performance during the combustion process will be very different.
For example, fibers such as cotton and linen are mainly composed of natural cellulose, which is extremely easy to burn and produces yellow and blue flames during combustion.
During the burning process, this fiber also produces a unique smell, similar to the smell produced by burning paper.
However, the burning of wool, silk and other fibrous materials is actually the burning of proteins. The smell of burnt feathers will flow out, and the burning ashes will form into balls and break into pieces when pinched.
In addition to the above plant cellulose and animal hair fibers, the most common fiber components are synthetic fibers, such as nylon fiber, polyester fiber and acrylic fiber.
In the process of purifying the DNA material from the dander, Lu Chuan first conducted a combustion experiment.
Soon, the results came out.
When the separated fiber was close to the flame, its edges shrank and burned, but it was not completely burned. When Lu Chuan took the fiber away from the flame, the edges were extinguished, and there was a smell of chlorine.
Lu Chuan suddenly realized that it was this kind of fiber material!
(End of this chapter)