Jiang Yuan directly took the clothes he got back and took the high-speed train to Changyang City.
These clothes have been cleaned and searched several times. It can be said that it is very difficult to find hair-level evidence from the fibers of these clothes. Even if they are found, most of them are contaminated eucalyptus.
The hair of outsiders.
Jiang Yuan's expectations were placed on the dander, especially on the woolen coats, wool cashmere sweaters, sweaters, fur hats and scarves he brought back this time.
Although these clothes have been rummaged through many times, they are not suitable for washing and do not need to be cleaned regularly. The Liu family did not take them for dry cleaning after Liu Limin's death. Therefore, they are the most promising to find the leather.
Crushing.
Secondly, there is a certain space in the gaps between these woolen and woolen products to accommodate dander. Especially when two people are in close contact, such as hugging, the dander may penetrate deep into the fiber.
, and only in this way, the skin scraps found are the most valuable.
This level of difficulty can be said to be hellish.
Therefore, even though they were facing a basket of clothes, half of the technicians at the Changyang Criminal Division Center began to tremble.
The remaining half will not be done.
Wan Baoming still insisted on gathering people together.
Jiang Yuan stood in the middle of the laboratory and said, "Thank you for your hard work, everyone. The task this time is quite important. We must extract as much skin flakes from the clothes as possible. It is better to be slow than to miss it."
Jiang Yuan was not prepared to do it alone. Even if there were just twenty pieces of clothes, hats and scarves, it would be tiring for three of them to do it together.
The workload of doing this may be greater than the workload of doing pollen, and it is almost the same as the concept of trace evidence.
At present, if you want to make it easier for eucalyptus to make pollen, you often use washing to wash out the pollen on the object. Because pollen is acid and corrosion resistant, even if it is ravaged like a washing machine, the pollen evidence will only be rinsed in the water.
, and then find a way to extract it using a centrifuge.
If the dandruff is caused in this way, it will be fine if the quantity is large, but if the quantity is small, the loss will be too great.
Wan Baoming had chatted with Jiang Yuan in advance and knew that it was a job of finding a needle in a haystack, so he specifically emphasized: "Eucalyptus is very important, everyone, cheer up, let's divide into groups AB, the two groups will cross-check, and the group with the most mistakes and omissions will have dinner
Three drinks as a penalty!"
"I'll treat everyone to roast whole lamb for dinner, with enough craft beer and Moutai." Jiang Yuan activated his banknote ability.
The technicians suddenly became excited. In these days, no one is short of a little oil star, but it is still very happy for everyone to have a lively roasted whole lamb, drink some Maotai, drink some beer and so on.
Furthermore, this was a favor to Ningtai Jiangyuan, and since he was gracious enough to treat him, he was naturally willing to roll up his sleeves and do it.
Apart from anything else, it would be great to leave a good impression on Ningtai Jiangyuan and ask for advice later, or if there is any technical cooperation, it would be great to become familiar with him.
The technical boss may be less powerful than the political boss, but as long as the technical boss doesn't die, he can always exert his remaining energy, which is quite impressive.
Changyang City's Criminal Science and Technology Center was originally the largest criminal science and technology team in the province, larger than the provincial department. These days, those who don't know trace evidence are doing other projects and tasks, and those who know trace evidence are working together in the laboratory.
It was also lively inside.
Jiang Yuan also called Huang Qiangmin and used the money owed by the Changyang Municipal Bureau to first buy a batch of head-mounted microscopes for the Changyang Municipal Bureau and then distribute them to everyone.
A group of people put on head-mounted microscopes and set out to search for skin flakes in the cracks.
The collected dander was sent directly to the laboratory to start PCR.
DNA identification of dandruff, especially dandruff, is a technology developed by government departments around 2008. It has been 10 years since it was promoted to Shannan Provincial Department, and it has been almost 12 years since it was promoted to various municipal, bureau and county bureaus.
What happened before and after.
Before that, if the criminal police didn't pay special attention to this knowledge, they would not collect dandruff at all.
Knowledge updating is a very long process. For criminal police officers, not to mention such heavy daily tasks, there is also a lot of knowledge that needs to be updated. Today I listened to the technical explanation of smart door locks. It will not be the sixth explanation of DNA the day after tomorrow.
It is also normal.
From this perspective, it is still possible to find the boyfriend's dandruff in the victim's clothes.
It's just very hard on the eyes.
A group of technicians started working and soon became silent.
On the other side, Xu Taining was also very tired.
There are three places and one bureau, and there is also a department and a department. Although the latter two appear in a cooperative manner, they also have requirements and have to report from time to time. Xu Taining himself is a senior police sergeant sent by the provincial department.
The demands placed on him inside are even higher.
Furthermore, it is not enough for the report to be just an empty description; it must also contain substantial data.
Even if the leader only listens to it, data and information are indispensable.
And when it comes to providing money and people, it is becoming increasingly difficult for the three places that contribute the bulk to cooperate. The provincial departments and ministries only provide matching services, and they will pay in proportion to how much money is provided by the subordinates. Even so, the provincial departments and ministries have begun to
It doesn't sound nice anymore.
At this time, an ordinary leader may need to seek support. Xu Taining is not like this, he always uses PUA.
"Huo City has reached 30%. If you add more, I will complete the report."
"Yes, Huo Shi has joined, so do you? Well, then you are still ranked first. Don't worry, the report will remain the same."
"Well, you must have marked it here. In fact, I suggest using people to exchange funds. It is more cost-effective to change now, so as not to think about using people later and the price comparison has changed."
"It's okay to include the laboratory time. You can make a bill for it later, but for the funding, you have to make up a little more... Hey, it can be folded back into the laboratory funding, but now everyone has paid it.
It’s just you who didn’t pay it…”
"Hey, the Changyang Municipal Bureau's laboratory funds have been paid in full. Look at your side..."
In terms of task management alone, although there are several lines to manage, Xu Taining does not find it too difficult, but the PUA units... are actually not very difficult either.
Xu Taining stood in the conference room, dancing like a fish in water, and his voice was as loud as a bell. He kept waving his arms and shouting loudly, like a football coach, as if everyone was being pushed away by him.
But all units are really being pushed by him.
The next night, after several rounds of screening, a clue finally became the only one.
Xu Taining checked again and again, and then he couldn't even take care of the leaders of the provincial department and couldn't wait to call Jiang Yuan. In the last two cases involving Jiang Yuan, Xu Taining had launched a battle but failed.
I was so aggrieved that I couldn't put it into words, but now I finally felt proud and proud.
"Captain Jiang, we may have found someone." Xu Taining's voice was so loud that it could pass through the glass window and reach outside the conference room.
"Found it? How did you find it?" Jiang Yuan was also inexplicably surprised.
Xu Taining was very proud and said: "It's easy to say. I pulled out the real estate transaction list of the three places and one bureau. In the three years before the incident, the number of people who bought houses with cash in the market was only four figures. And then with the victim Liu Limin
After comparing the transfer records in the list, one person will come out.”
He said it easily, but considering the effort involved in bringing the clues along, a single county bureau might not be able to survive this moment.
Xu Taining was full of arrogance: "This man's name is Wang Shiji. Coincidentally, his family is from a railway family. He is from Changyang City. His uncles, brothers, and uncle's grandfather are all on the railway..."
"Have you arrested anyone?" Jiang Yuan asked hurriedly. These details alone are enough to bring Wang Shiji back for interrogation."
"We'll be leaving soon." Xu Taining laughed twice to cover up his embarrassment.
He called Jiang Yuan as soon as possible this time. He had no time to order the arrest.
After hanging up the phone, Xu Taining immediately called Wu Junhao and asked his battalion team to set off and head straight to Changyang City.
Then, Xu Taining called the provincial department and Changyang Municipal Bureau.
By the time Wu Junhao's strike team arrived and joined the Changyang Municipal Police, it was probably already late at night, but no one raised any objections.
