1995, Starting as a Criminal Investigation Expert

Li Shu got into the zone and focused on explaining his insights into fingerprint comparison.

Having read a lot of materials, I can easily pick them up and casually ramble on.

Therefore, they did not pay attention to the reactions of the audience.

However, Peng Rong, who was hiding backstage, had been observing all along.

He noticed immediately that the people in charge of business were clearly just there to make up the numbers, and none of them were really serious about it.

He rested his chin on his hand, pretending to sleep, all of them slacking off and taking advantage of the situation.

They take the technology aspect quite seriously.

After all, it's their specialty.

In particular, the rapid location method that Li Shu is talking about now has helped them solve cases before.

This means they have witnessed the power of this method.

Furthermore, Guo Xiangyang had personally visited the Municipal Bureau to inquire about the matter, so he naturally wouldn't be negligent and genuinely wanted to learn.

Who wants to work overtime and stay up all night? Who doesn't want to get things done quickly and well?

The key is the leader's reaction.

Peng Rong silently observed Lin Huiquan. Although the leader had the ability to keep his emotions hidden, he could sense that Lin Huiquan was listening very attentively.

He even exchanged a few words with Tian Yu, the captain of the criminal investigation team who was accompanying him.

Of course, there's also Guo Xiangyang.

For example, when Li Shu mentioned paying attention to unusual blind spots, Lin Huiquan turned to Guo Xiangyang and said, "He is right about that. In the home invasion murder case in May, you overlooked the buttons under the dresser. It was only discovered during the second investigation, which almost affected the case."

A hint of embarrassment flashed across Guo Xiangyang's face, and he quickly nodded in agreement.

Lin Huiquan didn't intend to give him a warning, but only touched on the topic briefly, glancing at Li Shu on the stage and saying, "This young man is not bad, I heard he's a newcomer?"

Guo Xiangyang thought to himself, "That's more than just new. I joined at the end of August, and it's only been a few days."

Tian Yu peeked out from the other side.

He was in his prime, not yet forty, with short, neat hair and slightly dark skin. He smiled and said, "Old Guo, since he's such a talented person, haven't you thought about poaching him?"

Lin Huiquan nodded subconsciously.

Tingyang is now a county-level city, so theoretically, my rank is higher.

Lin Huiquan also wanted to make another effort to try and get into the city, as building up the team would be the top priority.

Newspapers keep saying that the most important thing in the coming 21st century is talent.

Then one can also be eager to seek out talented people.

Guo Xiangyang said speechlessly, "Tian Yu, what are you thinking? Don't you realize that the 9.5 case was solved entirely because this kid matched that fingerprint? With someone like that, do you think Director Tang would release him?"

When the September 5th case was mentioned, Tian Yu fell silent.

He wasn't part of the task force, but he cooperated fully with them and did a lot of investigation work. I wouldn't say I fully understood the case, but I could judge people.

On the first day, everyone was full of energy and eager to find the suspect immediately.

On the third day, her eyes were already red, and she looked at everyone as a suspect.

When the deadline arrives, they'll be like walking powder kegs, ready to explode at any moment.

Let's wait a few more days and see. They're all just walking corpses; people are numb to it all.

Tian Yu had handled major cases and understood this shift in mindset, knowing how difficult it was to complete a case later on.

Knowing the significance of Li Shu matching that half fingerprint, it was truly like the dark clouds in the sky parting and Guanyin Bodhisattva descending to save the day in a desperate situation.

Just then, Li mentioned the September 5th case.

Of course, they didn't talk much about the case details, mainly focusing on the difficulty of finding that half fingerprint.

Tian Yu immediately perked up.

Seeing his subordinates lounging around behind him, he gave them a few meaningful glances and silently told them to get serious.

He wanted to listen carefully to this part.

After all, in difficult cases, if fingerprints are available, they are usually incomplete.

Li Shuchong and Peng Rong waved.

Peng Rong quickly brought up the self-made rotating shooting platform.

Li Shu started by explaining how pressure causes fingerprint deformation, and then, using the example of trophies, practically introduced the principle of curved fingerprint unfolding.

Guo Xiangyang, sitting in the audience, paid no attention to anything else and listened attentively.

He was quite surprised when he learned that the suspect had been identified based on half a fingerprint.

Han Jianjun had previously given them materials to compare with that one and a half fingerprints. When Guo Xiangyang saw it, he was stunned, knowing that there was no hope for that fingerprint.

Now, Li Shu explained in detail, from the basics to the advanced, why this was necessary, the difficulties, and how to solve them, making Guo Xiangyang feel more and more enlightened as he listened.

Finally, when Li Shu talked about using a magnifying machine to overlay complete fingerprints, he felt a sense of clarity and sudden enlightenment.

I really learned something.

My only thought was, "Wow, how did they come up with the idea of ​​rotating the camera?"

He couldn't help but start clapping.

As soon as he took the lead, the technical squadron started applauding.

Each of them was excited, speaking from the bottom of their hearts.

There's nothing we can do; they're passing on the real scriptures.

There were some photography-related questions that Tian Yu didn't understand, so he only grasped a part of what was being taught. While clapping along, he asked, "Old Guo, is this method useful?"

Guo Xiangyang's eyes lit up, and he said, "It's not just useful, it's practically miraculous! Let me put it this way, if this were a martial arts novel, it would be the Nine Yin Manual!"

In his excitement, he even swore.

With that analogy, Tian Yu understood.

Lin Huiquan understood, and her gaze towards Li Shu on the stage began to become unnatural.

This applause interrupted Li Shu's train of thought. He quickly waved his hand to indicate that there was no need to applaud, saying that he hadn't explained it well and asking if there was anything he didn't understand.

"Damn, this is good? You're way better than what Lao Guo said."

They were all roughnecks, and it wasn't a formal occasion, so there was no politeness in their speech. An old man from the technical squadron chimed in, "That rapid positioning method, Lao Guo went to your place to learn it, and when he came back, he talked to us for ages, but he still couldn't explain it clearly."

Guo Xiangyang coughed awkwardly twice, then quickly gestured for Li Shu to continue, saying, "That's exactly what you're saying, it's excellent."

Li Shu felt a little relieved; it seemed that what he said was actually quite effective.

Now that we have gained confidence, let's move on to the next part, which is the partition comparison method.

In this section, Li Shu will first explain the comparison principle of the AFIS system.

Han Jianjun made this a specific request.

The municipal bureau has this system first, so when they have money, the branch bureaus might also spend money to buy it.

The sooner you learn, the sooner you'll understand.

Upon hearing this, Guo Xiangyang became even more excited and said, "Director Lin, look, this kid knows about computers too."

Lin Huiquan nodded slightly.

These days, anyone who understands computers is a talent.

From the principles of AFIS comparison to the purpose of branch office comparison, and the addition or subtraction of feature points, Li Shu also wanted Guo Xiangyang and his team to understand that AFIS only improves efficiency and is ultimately just a tool; in the end, it still depends on people.

Tian Yu suddenly raised his hand, interrupting Li Shu, and said, "So that means even with the AFIS system, it's not like you can just input your fingerprint and it will match?"

His concept of this thing was that it was a machine where you input your fingerprint and get the result immediately.

Now that I hear it, I realize how complicated it is.

"Then this thing is basically useless," a detective shouted from behind Tian Yu.

Guo Xiangyang started defending Li Shu, shouting, "Old Tian, ​​if you don't understand, ask me later. Don't interrupt Li Shu's lecture."

Tian Yu snorted and asked in return, "Did you understand?"

You even have someone specially help you print a document, do you know anything about computers?

Guo Xiangyang said awkwardly, "I'm learning, aren't I?"

When the two team leaders were talking, Li Shu felt embarrassed to interrupt and waited until they finished before answering Tian Yu's question.

This leads to what I was talking about: how to make good use of the AFIS system for comparing various complex fingerprints, such as incomplete or blurred ones.

It discusses how to use computers to increase exposure and high contrast, as well as preprocessing fingerprints.

It also talked about the "secret that is not passed on," which is how to analyze and try to reconstruct incomplete fingerprints.

It is even possible to make comparisons under a microscope using tertiary features such as the shape of sweat pores and the edge morphology of papillary ridges.

In conclusion, "This means that, theoretically, any fingerprint could be used for comparison, provided the conditions are right."

That concludes the explanation.

Guo Xiangyang, who was in the audience, realized what was happening and immediately started clapping.

Even the detectives who weren't particularly interested in the topic understood the sentiment and joined in the applause.

Only Tian Yu seemed to be deep in thought, his brows furrowed.