Humanity and sophistication exist everywhere.
Although Liu Guodong has no real power and only manages three people in the current survey office, it is different if he also takes over the trace inspection at the same time.
There are several criminal investigation squadrons under the Haizhou City Criminal Investigation Detachment, and it also has its own action team, and cases happen every day.
Nowadays, except for a few cases that can be caught at the scene, other cases require the use of spot inspection to fix the evidence.
For example, the footprint analysis done by Lu Chuan earlier.
Compared with footprint analysis, fingerprint comparison is a more common method for solving crimes.
In the current survey office, Liu Guodong, Yang Sen and Lao Bai are all experts in this field.
Of course, the so-called experts here are limited to the Haizhou City Criminal Investigation Detachment.
Fingerprint comparison is actually a basic compulsory course for any criminal police officer. Even the police officers at the police station can tell you something about it.
Some experienced auxiliary police officers can also do some work in this area.
But just like the flexible employment staff standing on the streets in alleys, compared to the service staff in luxury clubs, there is most likely a certain gap in terms of technical proficiency or hardware facilities.
Most criminal police can compare some fingerprints with a relatively high degree of completeness.
But the reality is that many of the fingerprints collected at crime scenes are incomplete.
Or the deformation is serious, which requires higher technical ability.
Lu Chuan once studied fingerprint comparison when he was at the Public Security University, but it was impossible for a teacher to teach dozens of students step by step.
Therefore, even a top student like Lu Chuan, who graduated from the Public Security University, has to follow the seniors step by step and accumulate bit by bit when he gets to work in actual jobs.
There are many cases and few technical staff, so the current investigation office has become a hotpot.
After all, no matter which squadron leader or leader of the action group, you have to ask Liu Guodong and the others.
The arson case in the southern suburbs that Operations Group Two is responsible for is one of the larger cases in recent days.
However, it was only one of them. There were still two robberies where the fingerprints had not been successfully compared. Yang Sen and Lao Bai were applying eye drops.
The leader of the second group is Ren Qiang, who joined the police in the same year as Liu Guodong. Most people of their age are already young bosses.
Definitely the backbone of the criminal investigation detachment, Ren Qiang took out the cigarettes, distributed them to Liu Guodong and others, and lit them for Liu Guodong himself: "Just compare ten sets of fingerprints first. We will have an action clue first."
After hearing this, Liu Guodong's expression changed. He puffed out a smoke ring from the cigarette in his mouth and said, "Team Leader Ren, do you know how long it takes to compare ten sets of fingerprints?"
"Look at Yang Sen and Lao Bai, they are almost blind."
In Lu Chuan's opinion, Liu Guodong's expression was a little exaggerated.
Yang Sen took eye drops out of habit, and it took him the whole morning to compare the two sets of fingerprints.
Moreover, all comparisons failed, and it was not to the point of overusing the eyes.
But Lu Chuan obviously wouldn't interrupt and poured a cup of tea for Ren Qiang: "Team leader Ren, drink tea."
For Lu Chuan, most people no longer view him as a newcomer. The detection of several cases in the past few days has made Lu Chuan's reputation in the criminal investigation detachment much greater.
"Thank you," Ren Qiang took the tea cup and rolled his eyes: "Old Liu, I know you have a small number of people and a lot of things to do..."
Ren Qiang then looked at Lu Chuan: "How about asking Xiao Lu to help compare?"
Lu Chuan was surprised and waved his hand hurriedly: "I can't be a team leader."
"I still have some research on footprint analysis. In terms of fingerprint analysis, I have studied fingerprint collection, but when it comes to comparison, it really doesn't work."
Although men can't say no, Lu Chuan thinks it's better to be realistic.
In terms of fingerprint collection, he has intermediate skills that are rewarded by the system, and he is confident that he can stand alone at the level of the Haizhou City Public Security Bureau.
But fingerprint comparison...
With the little talk he learned in school, a senior auxiliary police officer would probably be better than him, let alone Liu Guodong.
"Okay, Lao Ren, I'm so busy right now. I've looked at the fingerprints on your case."
In fact, Liu Guodong had already seen the fingerprints from the arson case in the southern suburbs: "A total of thirty-six sets of fingerprints were collected. Except for a few incomplete sets, the rest are basically the fingerprints after the fire."
He casually pulled out the fingerprint file next to him: "Old Ren, you are also an experienced criminal investigator. Take a look for yourself. Can this fingerprint still be called a fingerprint?"
"Don't say I can't compare. Even if you send it to the provincial department and let the experts compare it, the probability of success is not high."
The scattered fingerprint files fell into Lu Chuan's eyes.
A bunch of dark fingerprints, no, look at that, there are no traces of fingerprints anywhere.
This must be what happens after being burned by smoke and fire.
Ren Qiang smiled awkwardly. The fingerprints were collected by their second operation team. He knew what they looked like better than anyone.
"Old Liu, there's really no other way, so I just collected these fingerprints. We stayed up all day."
When it comes to collecting fingerprints, it’s actually best to do it with someone doing the survey.
But in fact, there are only four people in the field survey office, and they are too busy to sit at home and perform trace inspections every day.
Unless there is a major case, such as a murder, Liu Guodong and others will not appear at the scene at all.
It’s not that I’m too arrogant, it’s just that I’m really busy.
Therefore, the scenes of some cases are investigated and evidence collected by members of the action team.
Such was the case with the south suburban arson case.
"Old Liu, can you think of a way?"
"It really doesn't work. These fingerprints are basically worthless for comparison."
“A bottle of Luzhou Laojiao!”
"Old Ren, don't say one bottle, just ten bottles. If you can't handle it, you just can't handle it."
Even a bottle of Luzhou Laojiao would not suffice. Ren Qiang knew that what Liu Guodong said must be true.
With a sigh, Ren Qiang was about to get up and leave. As soon as he reached the door, he suddenly turned back and looked at Lu Chuan: "Xiao Lu, you just said you have research on fingerprint collection?"
ah?
Lu Chuan, who was about to go to the cafeteria to cook, was slightly startled. He had indeed said that just now.
But when Ren Qiang asked, it was obvious that something was wrong.
As a qualified professional, Lu Chuan set his sights on Liu Guodong.
Ren Qiang also knew what Lu Chuan meant. Although he had researched on fingerprint collection, he still had to see Liu Guodong whether he could go.
"A bottle of Luzhou Laojiao, Xiao Lu will take a trip!"
Tsk tsk.
Liu Guodong slapped the corners of his mouth: "This is not a matter of Laojiao not being Laojiao."
"Xiao Lu has just arrived after all. He has some experience in footprint analysis, but he lacks experience in fingerprint analysis. If we collect it..."
Liu Guodong glanced at Lu Chuan: "It's okay to try, but we can't guarantee that we will be able to collect clearer fingerprints."
Ren Qiang couldn't understand the meaning of Liu Guodong's words. He patted his chest and looked upright: "Don't worry, it was picked. The credit is due to the current survey. It has nothing to do with you if it is not picked."
"The wine will be delivered shortly!"
Liu Guodong nodded with satisfaction. If he wanted to be able to do things, it would have to be Lao Ren.
