Wang Chuanxing went to the warehouse to move nails and was stopped by someone.
He turned around and saw that it was Pan Zhisheng, the trace inspection policeman in charge of the bullet trace inspection at the Changyang Criminal Division Center.
Speaking of which, even in a provincial capital city like Changyang City, Pan Zhisheng is the only technician who specializes in bullet mark inspection. And in this case, Pan Zhisheng has obviously been 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... Is this nail comparison that your Jiang team is doing okay?"
"Are you hoping it will work, or are you hoping it won't work?" Wang Chuanxing relaxed and waved with a smile, asking Pan Zhisheng to help him move the nails.
The packaging of nails purchased locally is generally smaller. After all, the criminal police responsible for purchasing does not want to carry more weight. But the same cannot be said for online shopping, especially when a store sells a variety of nails. You can buy a small amount of each.
It comes out in a super large package with a full metal weight. Who knows who can move it.
Pan Zhisheng now delivered the goods to his door. Wang Chuanxing quickly called him and first carried the large packages of nails onto the trolley.
Pan Zhisheng could only help, and at the same time said helplessly: "I don't hope it will work, hey... To be honest, when we do gun and bullet trace identification, we usually mainly identify either guns or bullets. Now we don't have guns or bullet casings.
No, it’s just a warhead, and the warhead was shot within two meters. This... I have a hard time with it."
In bullet mark identification, the most commonly used method may be to determine the source of gun bullets, such as whether two bullets were shot from the same gun. The most difficult skill is actually the bullet mark, which is used to determine the shooting distance.
Direction, angle, entrance and exit, shooting sequence, etc. No matter how powerful it is, we can do ballistic analysis, calculate shooting angle, impact angle, warhead kinetic energy changes, etc.
And all of the above have nothing to do with nails.
Pan Zhisheng needed at least one steel ball to use the ballistic trace. And the ballistic trace of the nail... Now that it is confirmed that the shooting occurred within two meters, it can actually be considered effective.,
But Pan Zhisheng was still worried about receiving strange looks.
Wang Chuanxing could only say that he understood him a little bit, but more of it was funny, saying: "You usually do nail gun cases, right? When I was searching for information a few days ago, I saw that you averaged two months.
, we need to identify a dozen cases of modified firearms."
"The main reason is that some places in the north have the tradition of modifying firearms." When Pan Zhisheng said this, he didn't know what to say. He simply leaned over and said: "Let me help you move the nails."
Wang Chuanxing laughed: "I'm just saying, don't think so much. Since Captain Jiang said there is a way, there really is a way. There are many things that you don't understand."
"You are not a trace inspection, you don't understand..." Pan Zhisheng said a little lost his voice: "What you are comparing are new nails. If you have two of these things, compare them with each other. That's easy. We have plenty of ways. Now you have baskets of them
It takes a long time to compare and judge a nail when it is moved up, and all of it is done with the naked eye? You’re kidding.”
Wang Chuanxing curled his lips and said: "If you want to talk about Xuan, Captain Jiang only knows his age and height by looking at his footprints. He can tell his age and height at a glance. Height can be accurate to centimeters."
Pan Zhisheng glanced sideways at Wang Chuanxing, looking at hard toilet paper with his eyes, and said: "The earliest master of footprints in China was Ma Yulin, who was a member of NMG Zhaowuda. Back then, he always judged the criminal's route of activity directly from the scene.
, followed the criminal to the door of his home. He brought out three apprentices, Miao Chunqing, Ge Youzhong, and Yu Xinhao. These people started running footprint training courses in the early 1980s, and there are many mysterious stories left behind.
It all depends on your age and height."
While Wang Chuanxing was working, he listened to Pan Zhisheng telling him about ancient times, and then asked: "How are you doing with your basic skills?"
"That's the basic skill of a master." Pan Zhisheng said about himself, his expression collapsed, and he said: "You don't know, not only Yu Zhi is worried about this case now, but the director above is also worried. If he stays like this for a few more days,
They will probably summon me."
Wang Chuanxing looked at Pan Zhisheng sympathetically and expressed that he was helpless.
"Let's see, I hope we can come to a conclusion as soon as possible." That's what Pan Zhisheng said, but anyone knowledgeable knows that sifting through so many evidences cannot be completed in a day or two.
Even with the help of several people, after Jiang Yuan's work day, more express delivery arrived in the warehouse.
Although Jiang Yuanbi was faster at picking nails, the number of nails piled on the table without further judgment was also growing.
Several trace examiners from the Criminal Investigation Center wanted to help, but they didn't know how to start.
Jiang Yuan didn't expect them to be able to help.
The trace examiners at the Changyang Criminal Division Center generally wander between LV1 and LV2. Occasionally, someone is 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 mark inspection, this level of mark inspection is already very sufficient. However, compared with LV6's tool mark identification skills, the few mark inspections in front of us are not even close to Muggles.
Not far.
The case seemed to have come to a standstill for a while.
In fact, other criminal police officers from the Changyang City Criminal Police Detachment were also searching for clues on their own, but no breakthrough was made.
Yu Wenshu waited for two days, but finally couldn't bear it anymore and came to inquire about the progress.
Entering the office, what Yu Wenshu saw was Jiang Yuan who was working hard, like an ordinary trace examiner.
"How is it?" Yu Wenshu asked expectantly.
Jiang Yuan raised his head, taking the opportunity to relieve the soreness in his shoulders and neck, and said: "From the current point of view, there will be no results within three or four days."
"Three or four days means the time it takes to go through all the nails?" Yu Wenshu asked.
"right."
Yu Wenshu frowned: "Would you be looking for it and suddenly find an identical nail? For example, after two hours, you will suddenly be sure which nail it is..."
"Impossible. Because I am also looking for similarities." Jiang Yuan said truthfully: "What I am looking for now is the most similar nail, which is a comparative level, because the standards of nails are similar, and it is impossible to determine if they are exactly the same."
"This..." Yu Wenshu immediately despaired after hearing what he said: "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 that way." Jiang Yuandao.
"Then let's... if we keep doing this, the case will be very difficult to solve!" Yu Wenshu had rarely been so deeply involved in the investigation of cases before. He either directly commanded it, or just ignored it and left it to the police.
The reason why others are worried is because the superiors are forcing you to be too anxious.
Jiang Yuan put down the nail in his hand and said: "This is my current thinking. If there are other ideas, I think we can do it simultaneously."
"That's right." Yu Wenshu sighed.
And what he expected from Jiang Yuan's solution to the case was a battle directed at the loopholes of a certain murderer with determination, just like what he had done before.
However, Yu Wenshu also understood in his heart that this is how a policeman like Jiang Yuan with a technical background solves crimes. It sounds a bit cumbersome and a bit desperate, but if he chooses another route... at least it won't affect each other.
If a normal case proceeds according to Jiang Yuan's ideas, Yu Wenshu won't say anything.
Now it was difficult for him to wait any longer. After thinking about it, Yu Wen wrote: "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 knew that spending money would not necessarily make him stronger, but if he didn't spend money, he would feel uneasy!
