1995, Starting as a Criminal Investigation Expert

They chatted for a while, and the more they talked, the more excited they became.

"Wu Qi, you should learn from him," Liu Zhenping added.

Putting everything else aside, Li Shu's analytical approach to creative methods is worth learning.

First, we consider the relationship between the concave and convex lines and furrows, then we consider the exudate from the pores, the surface tension of the liquid, and even the selection of magnetic powder. All of these are purposeful and targeted.

I'm not just having wild thoughts; I suddenly dreamed about this method.

In Liu Zhenping's view, this is what it means to have rich work experience and then creatively find ways to solve problems.

Learning this way of thinking would be a huge gain.

Wu Qi nodded quickly.

This made Li Shu feel embarrassed. Just as he was about to say something modest, Han Jianjun secretly tugged at him.

His face didn't show much expression, but wrinkles had already appeared at the corners of his eyes from smiling.

I just felt one thing: awesome.

"Oh, right."

During their casual conversation, Liu Zhenping remembered something else and said, "Last time you came over, you mentioned using your partition comparison method to optimize the functionality of the AFIS system. We didn't discuss it in detail then. Li Shu, if it's convenient for you, could you explain it to me again?"

After saying that, she even offered an explanation of why she had asked the question.

"Our system was developed jointly by me and Tsinghua University, so it's similar to Peking University's system, albeit through a different approach. However, because of you, Peking University's system is now being advertised as having new features and being much better than ours."

"That's why I wanted to ask you, to see what exactly happened."

This is often the case in China's R&D industry: two teams work together, but end up competing with each other.

Many cities are now introducing AFIS systems.

Because of Li Shu, Peking University's system has new functions, which are advertised as being more efficient, having a higher probability of matching fingerprints, and being able to handle more complex fingerprints.

Then who would still buy Tsinghua's system?

Li Shu immediately thought of something.

Li Shu had no idea how Liu Weikun and his team modified the system, nor did he understand code.

Also, I received a reward of 5,000 yuan from Liu Weikun.

Of course, this certainly cannot be considered hush money.

If you really want to claim this as your own idea, then you should be entitled to a share of the profits.

Besides, I've already written a paper, so there's no point in saying anything more.

With that in mind, Li Shu immediately explained the situation in detail.

As a policeman, I can't make money from this, so I might as well gain a reputation.

This could very well contribute significantly to the future optimization and advancement of domestically produced AFIS systems.

Liu Zhenping listened attentively, took notes, and nodded repeatedly.

Li Shu's idea not only significantly increased the function of area comparison, but also added and removed feature points, and even optimized the management of the fingerprint database, allowing direct searching of the database to find target fingerprints.

"I have benefited greatly from this."

Liu Zhenping stood up, and the look in his eyes as he looked at Li Shu could no longer be simply described as admiration.

To come up with these methods, one must have thought them through carefully.

The key point is that he is open-minded and willing to share, which shows that Li Shu's original intention was good, that is, to promote the progress of criminal science and technology.

"Don't leave at noon! I'll treat you to lunch. I absolutely have to have a good drink with Li Shu today."

Liu Zhenping was in a great mood, and judging from his tone, it was as if he wanted to acknowledge Li Shu as his younger brother.

Once the fingerprints match, the technical work is considered complete.

Han Jianjun was no longer in a hurry. If he could get a free meal, why wouldn't he?

For someone like Li Shujiao, getting a free meal is nothing.

After we finished eating and came out, we asked around and found out that Xu Qiang had already gone to Wujing.

The Huangli Town Police Station came to investigate.

Zhao Ziqin was not at home. Neighbors said they hadn't seen her for more than two months.

Her parents are both alive, and she also has an older brother.

But no police were called.

Because she was a prostitute, she had long since severed ties with her family. Her family didn't acknowledge her at all and didn't care whether she lived or died.

In other words, this person disappeared without a trace for more than two months, and nobody cared.

dorm room.

Li Shu sat in front of the computer, practicing typing with one finger.

Tan Guoxiong carried in a plate of hairy crabs and said, "That's pretty tragic. Think about it, nobody cares whether they live or die. In the end, they died in the sewer and rotted for more than two months."

Li Shu nodded and quickly put down his computer to come over.

When they returned from Yanling in the afternoon, Liu Zhenping brought Li Shu two baskets of hairy crabs.

At the end of September, hairy crabs had just come to market.

Someone gave him a few baskets of food to try. He couldn't finish them all, and to thank Li Shu for not keeping anything for himself, he gave him two baskets.

On the way, Han Jianjun decided that there were too few baskets, not enough for the team to share, so he kept one basket for himself and Li Shu kept one basket.

"Holy crap, it really is a hairy crab! I knew it smelled off."

Shen Chuan pushed open the door and entered, his face beaming with joy.

Li Shu was taken aback: "Why are you back?"

We just confirmed the deceased's identity, and this should be the time to get things done, so why is he back?

It's only a little past seven.

Shen Chuan sat down with a grin, gazing longingly at the hairy crabs.

These days, this thing is a luxury item.

Then he said, "We caught him, just brought him back, and they're interrogating him now. I have to go on a business trip with Captain Hu tomorrow, so I'm coming home early."

As he spoke, he urged Li Shu to eat, saying that it wouldn't taste good if it got cold.

Li Shu didn't think he was shameless; they were all young people and colleagues.

After the restaurant started serving meals here, he would often come over to freeload.

The key is that they caught them so quickly.

"Shen Chuan, what's going on? We just compared the results this morning." Li Shu handed him chopsticks.

Tan Guoxiong served rice, then asked curiously, "The team didn't notify us. Aren't we going to be at the scene?"

Even after catching a suspect, a crime scene investigation should still be conducted.

Shen Chuan waved his hand and said, "No need. You guys had just gotten off work when we came back. Brother Yong took some people with him and didn't call you."

He then explained the situation.

"Zhao Ziqin lives alone and still makes a living through prostitution. She has a landline at home, so people usually contact her by phone."

"I went to the telecommunications bureau this afternoon to check the records. The last call was on July 16th. Upon investigation, it was found that a person named Peng Youjie made the call. This person is highly suspicious."

"Captain Xiao led us directly to this person, but as soon as we met him, he took off running. There was no question about it; it was him."

Li Shu was a little confused and said in surprise, "This is too easy."

The moment the victim's identity was confirmed, the murderer was found.

Shen Chuan had already started breaking off crab legs, saying, "What are you talking about? You're hoping we'll endure a few more days? I've been running around like crazy these past few days trying to figure out who died."

"Besides, now that the victim's identity has been confirmed, it's normal to immediately identify the murderer. Most cases are like that; they're not that complicated."

The act of sawing off a person's head and then painstakingly disposing of the body clearly indicates that it was not a random killing.

Murders committed between acquaintances are usually crimes of passion, which cannot be planned in advance. This makes it easy to leave clues and expose the perpetrators, making them easy to catch.

"Where's the head? Have you found it?" Tan Guoxiong asked anxiously from the other side.

The victim's head has never been found.

Li Shu quickly looked towards Shen Chuan.

The fact that the suspect deliberately sawed off the head and disposed of it separately suggests that he was afraid of revealing the victim's identity.

So the first team spent a lot of effort looking for the head.

I considered dumping it somewhere else, and searched the sewers, garbage dumps, and groves within a radius of several kilometers, but found nothing.

Li Shu had considered it all, thinking that even if he boiled the head, the skull would still remain, which would be difficult to dispose of.

The only solution is to bury it in a remote place, like Cheng Jianrong did, so that it can't be found for a while.

Mentioning this, Shen Chuan grinned and said, "That's why I said Shun was caught red-handed. You guys don't know, he didn't deal with his head, he froze it in his own freezer."

"When Lu Haitao opened the freezer, his head popped out from the bottom and he was so scared that his face turned green."

Li Shu gasped.

That's ruthless. They just froze his head in the freezer, guarding it every day. Doesn't that bother you?

"What's wrong with this person? Why did he kill someone?" Li Shu asked.

The head was found at home; there's no denying that, and further interrogation is unnecessary.

Shen Chuan said while eating, "You guys remember there was a gas station over there in that grove of trees? Peng Youjie worked there. He's over forty, his wife ran off with someone else, he has no children, and his parents died a long time ago."

"He's a bachelor, so he frequents prostitutes. He's been with Zhao Ziqin a few times, so they're pretty familiar with each other."

"Firstly, he doesn't have children, and secondly, he's probably getting on in years, so he might not be as good in that area anymore."

His eyes were somewhat ambiguous as he said, "Then that day he called Zhao Ziqin to his home. He probably did things too quickly, so he nagged a bit, saying that Zhao Ziqin wasn't working hard enough."

"Zhao Ziqin probably said something like, 'You're not good enough, don't blame me,' which immediately provoked Peng Youjie, and the two started arguing."

"Zhao Ziqin had a sharp tongue and probably said something to provoke Peng Youjie. In a fit of anger, Peng Youjie grabbed a wrench and hit Zhao Ziqin, killing her."

Li Shu frowned.

From this perspective, Zhao Ziqin's words have brought her trouble.

Regardless of the circumstances, Peng Youjie's killing was ultimately wrong.

Seeing that the two were silent, Shen Chuan urged, "Hurry up and eat, don't waste food."

Li Shu picked up a hairy crab, casually lifted its head, and looked at the plump crab roe. For some reason, he was reminded of a head that had been frozen in a freezer.

Everyone can imagine that scene.

"Why did you come back so early?" Li Shu glared at Shen Chuan and took a big gulp of crab roe.