civil forensic

Chapter 444
"Little King."

When Wang Chuanxing came to carry the spikes in the warehouse, he was stopped by someone.

He turned his head and saw that it was Pan Zhisheng, the trace inspection policeman in charge of the bullet trace inspection in Changyang City Criminal Center.

To put it bluntly, even in a provincial capital like Changyang City, Pan Zhisheng was the only technician who specialized in the inspection of bullet traces.In this case, Pan Zhisheng was obviously pushed to the forefront.

Wang Chuanxing smiled unconsciously and said, "Old Pan, what's the matter?"

"Hey..." Pan Zhisheng sighed before saying anything, and then said, "I don't know what to say... Your Team Jiang's comparison of nails, is it okay?"

"Do you hope it will work, or do you hope it won't work?" Wang Chuanxing relaxed, and waved with a smile, asking Pan Zhisheng to help him lift the nails.

Locally procured nails are generally packaged in relatively small packages. After all, the criminal police in charge of purchasing do not want to carry too much weight.But that’s not the case for online shopping, especially when a store sells a variety of nails. If you buy a small amount of each, you can get a super large package, and the weight of all metal, whoever moves it will know.

Now that Pan Zhisheng had delivered it to his door, Wang Chuanxing hurriedly called him, and first lifted those large packages of nails onto the cart.

Pan Zhisheng could only lend a hand to help, and at the same time said helplessly: "I don't want it to work, hey... To be honest, we do the identification of bullet traces, and usually the main identification is either guns or bullets. Now there are no guns, bullet casings. No, it’s just a warhead, and the warhead was fired within two meters, this... I’m also having trouble.”

In the identification of bullet traces, the most commonly used method may be to determine the source of gun bullets, such as whether two bullets were fired from the same gun.The most difficult skill is actually the impact marks. According to the marks, determine the shooting distance, direction, angle, entrance and exit, and shooting sequence, etc. No matter how powerful it is, do ballistic analysis, calculate the shooting angle, falling angle, kinetic energy change of the bullet, etc. wait.

And all of the above have nothing to do with nails.

Pan Zhisheng needed at least one steel ball to use the ballistic trace.As for the ballistic traces of the nails... Now that the shooting happened within two meters, it actually worked. ,
But Pan Zhisheng was still worried about receiving strange looks.

Wang Chuanxing can only say that he understands him a little bit, and it is more funny, saying: "You usually do a lot of nail gun cases, right? , you have to identify more than a dozen cases of modifying firearms."

"The main reason is that in some places in the north of us, there is a tradition of modifying firearms." Pan Zhisheng didn't know what to say, so he simply leaned over and said, "Let me lift the nail for you."

Wang Chuanxing laughed: "That is to say, don't think so much. Since Team Jiang said there is a way, then it really has a way. There are many things that I don't understand."

"You are not a trace inspector, you don't understand..." Pan Zhisheng said in a voiceless voice: "You are comparing new nails. If you have two of these things, compare them with each other. That's easy. We have plenty of solutions. You have a basket of them now. How can a nail take a long time to compare and make judgments, and all with the naked eye? Just kidding.”

Wang Chuanxing pursed his lips and said, "If you want to talk about Xuan, Team Jiang can only look at the footprints. You can tell the age and height at a glance. The height can be accurate to the centimeter."

Pan Zhisheng squinted at Wang Chuanxing, looked at the hardened toilet paper with traces, and said: "The first master of footprints in China is Ma Yulin, who is a member of the NMG Zhaowuda League. He used to judge the criminal's activity route directly from the scene. , tracked and chased to the door of the criminal's house. He brought out three apprentices, Miao Chunqing, Ge Youzhong, and Yu Xinhao. These people have held footprint training courses since the early 80s, leaving behind many mysterious stories. Judging by age and height are basic skills."

While working, Wang Chuanxing listened to Pan Zhisheng explain ancient times to himself, and then asked, "How is your basic skills doing?"

"That's the master's basic skills." Pan Zhisheng said about himself, his expression collapsed, and he said again: "You don't know, not only Yu Zhi is worried about this case, but also the director above. If we stay like this for a few days, I will probably be summoned."

Wang Chuanxing glanced at Pan Zhisheng sympathetically, expressing that he was helpless.

"Let's see, I hope we can come to a conclusion as soon as possible." Pan Zhisheng said so, but anyone who knows the business knows that sifting through so many evidences is not something that can be completed in a day or two.

Even with the help of several people, after Jiang Yuan's day's work, more couriers arrived in the warehouse.

Although Jiang Yuan compared the nails faster, the number of nails piled up on the table without further judgment was constantly increasing.

Several trace inspectors from the criminal center wanted to help, but they didn't know what to do.

Jiang Yuan didn't expect them to be of help either.

The trace investigators of Changyang City Criminal Center generally wander between LV1 and LV2. Occasionally, some people are slightly better in a certain aspect, but there is a high probability that they will not reach LV3.

In terms of the difficulty and work intensity of trace inspection, this level of trace inspection is already quite enough. However, compared with LV6's tool trace identification skills, the few trace inspections in front of me are far away from Muggles. not far.

For a while, the case seemed to have come to a standstill.

In fact, the other criminal policemen of the Changyang City Criminal Police Detachment are also searching for clues on their own, but they have not made a breakthrough.

After waiting for two days, Yu Wenshu couldn't bear it anymore and came to inquire about the progress.

Entering the office, what Yu Wenshu saw was hardworking, like Jiang Yuan, an ordinary trace inspector.

"How is it?" Yu Wenshu asked expectantly.

Jiang Yuan raised his head, relieved the soreness in his shoulders and neck by the way, and said: "At present, there will be no results within three or four days."

"Three or four days do you mean the time to go through all the nails?" Yu Wenshu asked.

"Correct."

Yu Wenshu frowned: "Would it be possible to search for it and suddenly find an identical nail, for example, after two hours, suddenly determine which nail it is..."

"Impossible. Because I'm also looking for similarities." Jiang Yuan said honestly: "I'm looking for the closest nail, which is a comparative grade, because the standards of the nails are all similar, and it is impossible to be sure that they are exactly the same."

"This..." Hearing what he said, Yu Wenshu immediately despaired: "That is to say, even if you find a nail, you can't be sure that the murderer's nail was produced by the same family."

"It can be understood in this way." Jiang Yuan said.

"Then let's... if we keep doing this, the case will be very difficult to solve!" Yu Wenshu had rarely been involved in the investigation of a case in such a deep way before.He either directs or doesn't care, and the state of leaving it to others and worrying is also because the higher-ups are too anxious.

Jiang Yuan put down the nail in his hand, and said: "My current thinking is like this. If there are other thinking, I think it can be carried out simultaneously."

"That's right." Yu Wenshu sighed.

And what he was looking forward to for Jiang Yuan to solve the case was a battle that was directed at the loopholes of a certain murderer, just like what he had done before.

However, Yu Wenshu also understood in his heart that Jiang Yuan's policeman with this kind of technical background solved the case in this way. It sounds a bit cumbersome and a bit desperate, but if you choose another route... at least it will not affect each other.

Ordinary cases are carried out according to Jiang Yuan's thinking, and Yu Wenshu will not say anything.

Now it is difficult for him to wait any longer. After thinking about it, Yu Wenshu said: "Then I will think of a way, and then look for other clues. Let's take several routes and go hand in hand."

"I have no objection." Jiang Yuan nodded.

Yu Wenshu also nodded, went out, took out his mobile phone, found the phone number of "Xu Taining", hesitated for a few seconds, and dialed it resolutely.

He knows that spending money will not necessarily make him stronger, but if he doesn't spend money, he feels uneasy!
(End of this chapter)