Chapter 250: Please

"Team Huang... when we met last time, do you remember?" Wan Baoming walked further away, holding the phone, his head lower than his shoulders, his waist bent.

Being a deputy director is not easy, and there aren't many things he can take out, but Huang Qiangmin's appetite is quite big.

In Wan Baoming's eyes, there was clearly a trace of crystal clear.

Doing something is too difficult.

Jiang Yuan couldn't see the eyes and expression of Comrade Wan Baoming. He sat on the other side of his study, nearly 20 meters away from the corner Wan Baoming chose, and couldn't even hear clearly what Wan Baoming was saying.

Of course, Jiang Yuan had no interest in listening to him argue with Huang Qiangmin.

He opened the computer himself, put the fingerprint Wan Baoming brought in, and first processed it simply with Photoshop.

Having done fingerprints for a long time, before matching with the software, Jiang Yuan had already been able to make some of his own judgments. Whether it can be matched, how similar the matched fingerprint is, these can all be predicted.

In general, fingerprints with too high a degree of incompleteness, if not processed with image software first, anything can be matched.

Of course, it is possible to match the correct fingerprint, but for those doing technology, playing this probability game is meaningless. Those trace examiners at the lv2 level, when doing ultra-high difficulty fingerprints, might only adopt this method to cover the task, but for Jiang Yuan, he has already transcended this gear.

He is now at least at the lv4.2 level, and just that 0.2 behind is enough to beat a group of people.

Doing high-difficulty fingerprints a lot, and always being able to succeed, this experience itself is precious. It's like an ordinary person who has been in the position of president for a long time, gradually being able to figure out some insights.

The fingerprint Wan Baoming brought this time had a degree of incompleteness that was a bit too high. Based on Jiang Yuan's experience, throwing it into the fingerprint software to match now, the answer obtained would be equivalent to random.

This is not strange either. If the difficulty didn't exceed the lv3 level, why would Wan Baoming be so humble.

After Wan Baoming talked on the phone with Huang Qiangmin for a few minutes, Wan Baoming came over with the phone and whispered: "Jiang Yuan, your Team Huang's call."

"Alright." Jiang Yuan took the phone.

"Jiang Yuan, how is the rest? Are you tired?" Huang Qiangmin asked with a smile on the phone.

"It's okay. I laid bricks for a day today and sweated a bit." Jiang Yuan said.

"Sweating is good. After sweating, the body is comfortable." Huang Qiangmin laughed and said: "Wan Baoming brought another fingerprint for you? Climbing up the pole after the snake? Is the difficulty of the fingerprint he brought this time high?"

"High. The probability of doing it directly is not high." Jiang Yuan said.

"Oh, then can it be matched? Can you match it?"

"That depends on whether there is a fingerprint in the library." Jiang Yuan paused and said: "Even if there is a fingerprint in the library, it depends on the quality of the fingerprint in the library..."

"Give a number, how many percent certainty do you have of being able to do it?"

"..." Jiang Yuan looked at Wan Baoming without hiding too much.

Analyzing from the keywords alone, Jiang Yuan felt that Wan Baoming must have sought help from fingerprint experts from the Ministry.

But honestly, fingerprint experts from the Ministry don't necessarily have the lv4 level. There are powerful experts, certainly there are those with levels exceeding lv4, and maybe even big shots at the lv5 level.

But experts also have to talk about probability and investment.

Can Wan Baoming invite a fingerprint expert who is strong enough and ask the other party to devote themselves wholeheartedly?

It's probably very difficult.

A bigger possibility is that the other party helped to look at it, couldn't match it in a short time, and gave up.

After all, experts from the Ministry are very busy. There are more than 30 provinces like Shannan Province in the country, and for ultra-high difficulty suspicious fingerprints, even experts can't see one in a week.

This is like during the fingerprint battle, normal experts at the level of the Shannan Provincial Department, in the 15 days of the battle, look at about 100,000 fingerprints, and it's not bad to be able to match a few.

And the intensity and importance of the battle are completely different from daily help.

Jiang Yuan only said to Huang Qiangmin: "The hope of doing this fingerprint normally in the province is not great."

Huang Qiangmin understood and said happily: "Okay, then you give the phone to Wan Baoming, I'll let him make up for the expenses of the last fingerprint."

Jiang Yuan smiled: "The last fingerprint only took two hours."

"Someone told me about this, it has to be calculated according to computing power." Huang Qiangmin said confidently: "You give the phone to Wan Baoming, don't feel sorry for him. Changyang City is such a rich place, a little bit leaking from the fingers is enough for our small county to struggle for 10 years."

Jiang Yuan laughed and returned the phone to Wan Baoming.

Wan Baoming took it carefully, placed it solemnly to his ear, and said: "Team Huang, I'm Little Wan..."

Wan Baoming continued to walk to the corner while talking.

Jiang Yuan sat back in front of the computer. Before the host started to roar, Jiang Yuan could vaguely hear some very mysterious keywords:

"Please."

"Really worried."

"Team Huang~"

"Give me a hand..."

For a long time, Wan Baoming sent the phone with a hot back cover to Jiang Yuan's side.

Jiang Yuan: "Hello. Team Huang."

Huang Qiangmin: "Jiang Yuan, handle Wan Baoming's task well. Your holiday here still has two days, so don't rest for now, count it as working again. After you finish, you can rest. The Changyang City Criminal Science Center has helped us with many cases before. This time, cherish the opportunity to cooperate..."

"Yes." Jiang Yuan responded properly.

"Director Wan, then Jiang Yuan will be handed over to you. The young man doesn't understand things. If there is anything done poorly, please bear with it. If there is a problem, just come to me directly, I will criticize him..." Huang Qiangmin ended the call with nagging.

Wan Baoming put away the phone and sighed: "Your Team Huang is not as easy to talk to as before."

Jiang Yuan just smiled and didn't make a sound.

Borrowing someone else's big green ox to plow the land is probably different from borrowing a cat to catch mice.

The mouse moved, and the computer roared.

In terms of image rendering, no matter how high the configuration of the computer is, the sound is the same. This is like that, right.

"Director Wan, is it convenient to introduce the case?" Jiang Yuan asked Wan Baoming during this time.

"This is the case of Maixin Electronics Factory last year. A female worker was pushed down from the roof. At first, it was thought to be suicide. Later, there was an eyewitness who said they saw two people on the roof, and there was a pushing action..." Wan Baoming described the scene, and then focused on the evidence:

"The initial police response was actually a bit problematic, because it was thought to be suicide at first, so the scene protection wasn't very good. The factory security and workers all ran to the roof."

"Secondly, there is only an eyewitness, and there is a lack of surveillance video. Because everyone was wearing work clothes, it was not easy to judge the killer."

"The third one is that the workers in the factory are not very familiar with each other. This Maixin factory uses a mode of recruiting people as they are used. That is, signing a large OEM order, recruiting a batch of workers to work, and when they are almost done, they are fired, and waiting for the next large order to recruit again. Therefore, it is not easy to solve the case along the social relationship."

Jiang Yuan listened to Wan Baoming's introduction and couldn't help but ask: "Then the only evidence is the fingerprint on the clothes?"

Wan Baoming sighed: "The problem now is that the fingerprint on the clothes has become a reverse evidence. Several suspects that the criminal police focused on questioning were all excluded by the fingerprint evidence on the clothes..."

Jiang Yuan couldn't help but laugh when he heard it, and asked: "Then everyone in the factory should have had their fingerprints collected?"

"Collected. At that time, something happened, the factory was directly sealed, and the video surveillance at the entrance and exit was all complete."

Jiang Yuan couldn't help but nod. In this way, the problem of the fingerprint library was actually solved.

From the perspective of a trace examiner, this is a very perfect environment for fingerprint comparison. As long as you make the fingerprint, you can compare it.

Thinking of this, Jiang Yuan frowned again and said: "Then the core problem is matching the fingerprint. It's a case from last year. If it can't be matched, matching one by one, it should always work..."

Wan Baoming's mouth couldn't help but smile, and he quickly covered it up, saying: "Yes, the factory was Maixin at the time. You might not understand. The factory had a large order at the time and was in a state of full workload. There were nearly 30,000 workers in the factory area."

Jiang Yuan suddenly realized.

In a large factory with tens of thousands of people, comparing fingerprints one by one is definitely not realistic, especially since the state of this fingerprint is so poor.

"What did you use to extract the fingerprint at that time? 502?" Jiang Yuan looked at the fingerprint and began to gradually enter the state of fingerprint comparison.

Wan Baoming understood the implied meaning of Jiang Yuan and smiled bitterly: "Yes, it was smoked and revealed by 502."

Similar to the smoking and revealing method of ninhydrin, the 502 glue smoking and revealing method is also a scheme to make latent sweat fingerprints appear after applying chemical reagents.

Similarly, all similar schemes actually have a problem that everyone talks about less, which is that it is easy to have flaws when operating.

The criminal left a fingerprint, which was already careless. If the fingerprint was damaged and not fully displayed, the person would definitely not give another copy.

Just like this fingerprint, it was so incomplete, but the trace examiner had to work hard to match it. Usually, they have to complain about the one who extracted the fingerprint. Usually, the one who gets scolded is the on-site investigator.

Jiang Yuan used image software to adjust the fingerprint, and gradually had an idea.

His spirit was up, so he didn't bother to pay attention to Wan Baoming, and said: "If you are bored, play with the dog. When there is a result, I will tell you."

"Okay." Wan Baoming responded, and then reacted: "Am I waiting here?"

"Then... if you have something to do, go get busy." Jiang Yuan was naturally indifferent.

Wan Baoming said busily: "That's not what I meant, I mean... uh, can there be a result today?"

"Possibly. Now it's mainly about processing the image. This fingerprint was taken from cotton clothes. Cotton, this natural fiber, has spiral distortion. The fiber cross-section looks like a kidney, and it is easy to have fluff. This is the main reason why the latent sweat fingerprint expression is insufficient..." Jiang Yuan gave Wan Baoming a brief explanation.

Wan Baoming looked at Jiang Yuan and said: "I have also done trace examination, I understand the truth, but..."

Jiang Yuan was silent for a while, and then said: "If you are bored, why don't you go back to Changyang City, and send the people and things Team Huang wants to him? After sending them, come back, and I will have a result by then."

He had already processed the image for nearly half, and felt that the clarity of the processed image was acceptable. Considering that Changyang City had collected the fingerprints of everyone in the factory, it was equivalent to the library for comparison being complete, so the possibility of matching was greatly increased.

In fact, if the fingerprint still couldn't be matched in this situation, this matter itself would also be very meaningful and valuable.

Therefore, the answer Jiang Yuan gave was very certain.

Wan Baoming felt that Jiang Yuan was a bit crazy, but looking at Jiang Yuan's expression, he didn't smell that crazy taste.

"Okay. I'll go back first, and also report to the leaders. Later, I'll come back to wait for your good news." Wan Baoming restrained all his little emotions.

His philosophy is that as long as you can make things, I will serve you.

Based on this mode of thinking, Wan Baoming's own ability is average, but he has gained the recognition of many criminal investigation experts, and then became the deputy director of the Changyang City Criminal Science Center.

Inside the Criminal Science Center, Wan Baoming is also a relatively recognized leader. It is also because he is a type of person who respects technology.

As long as Jiang Yuan can make things, Wan Baoming can also accept the combination of Jiang Yuan and Huang Qiangmin.

But if not, Wan Baoming would have to talk to Huang Qiangmin and Jiang Yuan in reverse.

After going out and getting into the car, Wan Baoming started talking in the group in advance:

Daily Withering: 【Took the cold case of the murder case from last year again and found Jiang Yuan. Super difficult fingerprint, didn't expect Jiang Yuan to agree to it, now going to move bricks to exchange for fingerprints...】

South Conquest North War: 【Only heard of moving bricks for 30 days, going to the club on the 31st, what the hell is moving bricks to exchange for fingerprints?】

Daily Withering: 【Team Huang opened some conditions, I have to prepare some resources for him. Can't let people work for nothing. No, what the hell is the one who moves bricks to the club?"】

South Conquest North War: 【Moving bricks is so tiring, if it's not to go to the club, it's a tear-jerker.】

Daily Withering: 【What if there is no 31st?】

South Conquest North War: 【You are moving bricks, not robbing a bank, don't you have to save money for two months?】

Daily Withering: 【Makes sense...】

South Conquest North War: 【What conditions did Team Huang open? You still have to prepare resources?】

Daily Withering: 【A few technicians, a few pieces of equipment, technicians bring a scene investigation vehicle over.】

South Conquest North War: 【So good? Have new cars to use again?】

Daily Withering, who was swiping his phone in the car, couldn't help but sit up, frowning and typing:

Daily Withering: 【No, who are you @South Conquest North War】

South Conquest North War: 【I... am just a man who travels south and north, has accumulated some experience, and is happy to share.】

Ningtai County Criminal Police Brigade.

Sitting in the office, Liu Wenkai, who was bored and blowing water, let out a long sigh, then raised his head and said to the squadron instructor: "Let's find two cold cases and have a tough battle."

"Looking for trouble for yourself? Are the cases in your hands finished?" The instructor sneered.

Liu Wenkai chuckled and whispered: "I received inside information that our brigade will likely have a few temporary workers, and they are doing technology."

"So good?" The instructor was very surprised: "We have no establishment long ago, where did the people come from?"

"Supported by the Changyang City Criminal Police Team. Probably."

"Reverse temporary transfer?"

"Probably. Do you want them?" Liu Wenkai said calmly: "If you want people, don't you need projects?"

"Okay, okay, open the cold case, open the cold case." The instructor said twice in a row. For the squadron that is busy all day, there is nothing more comfortable than increasing manpower. ===== CHAPTER 251 =====

"They were supported by the Changyang City Criminal Police Brigade. Probably."

"Reverse secondment?"

"I guess so. Do you want them?" Liu Wenkai said with a calm expression, "If you want people, don't you need a project to justify it?"

"Fine, fine, fine, let's open a cold case, let's open a cold case." The instructor repeated it twice. For a squadron that was busy to the point of exhaustion every day, there was nothing more comfortable than increasing their manpower.