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

Chapter 182 Fiber Experiment
Ok?
Ren Qiang and Zhang Hui looked at each other, what's going on?
They haven't asked specific things yet, so why don't they call themselves?

Dang!

There was the sound of pots and pans falling to the ground in the back kitchen, and Chen Liu's wife rushed out immediately after.

"Uncle policeman, the six sons really didn't harm the Wang family boy!"

Chen Liu's daughter-in-law burst into tears, and the nervous police uncle yelled out.

"Woooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo..."

"Why did the six sons kill their children?"

"You have to decide for us!"

Looking at Chen Liu's daughter-in-law who was slumped on the ground, Ren Qiang and Zhang Hui didn't help or didn't help.

"Chen Liu, get your wife up first."

"The matter will be investigated clearly. No one can wrong you if you don't kill anyone."

"Really?"

Chen Liu's daughter-in-law's expression now doesn't seem to be appropriate to describe it as pear blossoms with rain, but there is quite a meaning.

Ren Qiang sighed and replied, "Really!"

Chen Liu also got up and helped his daughter-in-law up: "Why are you crying!"

"Don't you know if I killed or not?"

"Go back to the back room!"

The woman glanced at Ren Qiang and Zhang Hui, agreed to Chen Liu nonchalantly, and went back to the back room every step of the way.

Chen Liu smiled awkwardly: "Comrade policeman, I'm sorry, rural people have never seen the world, so I laughed."

"However, I really didn't kill anyone."

"How do you know that we came because we thought you had killed someone?"

"Because the day the child disappeared, the police station also came."

Chen Liu spread his hands: "Just like you, they also asked many people in the village."

"Around the Spring Festival, I almost got into a fight with the old Wang's family because of contracting the vineyard."

"They said that I had an enmity with Lao Wang's family, and that I hid the child when it was lost."

"In fact, I not only wanted the vineyard of the old Wang's family, but also the old Tian's house in the west of the village, the old man Zhang in the east, and the old Dong's house in the middle."

"Then that said, I have many enemies, so I can't just look for me if anyone loses a child, right?"

"Now that the child is dead, you come again and ask the same questions as the police station. I know you must suspect that I killed the child."

Ren Qiang listened quietly without refuting or asking any more questions.

"Chen Liu, people in the village say that you are idle and idle."

Ren Qiang pointed to the car in the yard: "But I think your house is in good condition, and you have a car."

"Oh, that one, my dad bought it for me."

"Your wife is pretty too."

"Oh, daughter-in-law, my father married her."

"What does your father do?"

"The village secretary."

"Then what do you usually do for a living?"

"Depend on my dad."

……

Chen Liusha didn't kill anyone and said that the villagers' evaluation of his idleness was not too big of a mistake.

After leaving Chen Liu's house, Ren Qiang turned his head and looked at the door.

"What do you think about Chen Liu...?"

Zhang Hui shook his head: "I don't think he looks like a murderer."

"Oh? Is there any reason?"

Ren Qiang continued: "In the countryside, the neighbors have lived for a long time and know each other very 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 is not only in conflict with the Wang family because of the land entitlement, but also several other families. The relationship is also very tense."

"Secondly, Chen Liu...has no motive to kill people. He is an old man who relies on his father to be the secretary of the village party committee in the village. He 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 the old Wang's family almost got into a fight over the matter of enclosing land. Everyone in the village knows about it."

"At this time, the child of the Wang family 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 suspected, but there were too many groundless grounds for this suspicion.

Many things, which seem the most suspicious, are actually the least likely.

Of course, there will never be a shortage of people who think they are smart in the world. On the contrary, there are not one or two people who engage in dark under the lights.

Chen Liu is still the biggest suspect in the case of Wang Zihan's disappearance and murder.

At 07:30 in the evening, the sky was already dark.

Surveying the office now.

The four of Lu Chuan are dealing with the physical evidence collected on the missing section of Wang Zihan.

Yang Sen originally asked for leave, but came back in the afternoon because of a murder case.

"So many physical evidence?"

Looking at several boxes of collection bags in the laboratory, Yang Sen felt his scalp go numb.

When will this be analyzed?
"Put the boxes here first, and let's make these two boxes first."

The five physical evidence boxes in the front are all the physical evidence collected by the few people at the beginning. They have been collecting since Wang Zihan's house, and there are indeed more things.

But after changing the way of thinking and focusing on the distance after the turn, the physical evidence is much less.

"Xiao Lu, this is the physical evidence found in the refurbishment of the soil. The amount is not large. You have experience in the analysis of trace physical evidence. You will operate these. The three of us are in charge of the other boxes."

"Okay, Master."

Lu Chuan nodded, and what Liu Guodong gave him was the physical evidence analysis of skin flakes and similar fibers found near the refurbishment soil.

The amount of physical evidence is very small, but it should be said to be the biggest discovery of the on-site investigation.

The first is to do DNA identification on trace dander.

Although Lu Chuan has never used the equipment in the trace evidence analysis laboratory before, he has experience in using equipment in the intermediate field survey skills.

I can't say how proficient it is, but it is not difficult to operate.

As for the fiber, Lu Chuan first separated a part and prepared to do a combustion experiment.

Fiber products all look similar on the surface, but because of different components, their performance during combustion will be very different.

For example, fibers such as cotton and hemp, which are mainly composed of natural cellulose, are extremely flammable and produce yellow and blue flames during combustion.

During the burning process, this kind of fiber also produces a unique smell, similar to the smell produced by burning paper.

However, the burning of fibrous materials such as wool and silk is actually the burning of protein, and there will be a scorched smell of burning feathers, and the burning ashes will become balls and shatter when pinched.

In addition to the above plant cellulose and animal hair fibers, the most common fiber components are synthetic fibers, such as nylon fibers, polyester fibers and acrylic fibers.

In the process of purifying dander DNA, Lu Chuan first conducted a burning experiment.

Soon, the results came out.

When the separated fibers approached the flame, the edges contracted and burned, but they did not burn completely. When Lu Chuan took the fibers away from the flame, the edges went out, and there was a smell of chlorine gas.

Lu Chuan suddenly realized that it was this kind of fiber material!

(End of this chapter)