1995, Starting as a Criminal Investigation Expert

Han Jianjun is the head of the technical brigade, the top leader.

The entire technical team, including the internal staff in charge of archives, has a total of 23 people, which can be theoretically divided into five working groups.

In terms of specifications, it is a technical squadron.

These include trace evidence examination, document examination, physical and chemical examination, photography, and even forensic medicine.

Of course, this is just one way of dividing it.

In practice, because there are few people, except for the forensic team which is a special case, the members of the other teams can actually share resources.

Li Shu had learned about things like taking photos at the scene and conducting physical and chemical tests in school.

Once you're in the bureau, you can't just be responsible for one aspect.

With millions of people in the city and countless cases every day, 23 people are not enough to handle the workload.

Han Jianjun is such a person who can coordinate the overall situation.

He was even responsible for the police dogs.

Nanjiang started its police dog service in the 1960s, which was initially a core business of the technical squadron.

Therefore, Zhao Yong was still in charge of Li Shu's specific work.

They didn't interact much in the morning, and barely exchanged a few words. Zhao Yong even apologized to the two of them as soon as he left.

Logically speaking, since I just arrived, I should be given a day to tidy up my dorm and buy some daily necessities.

Tan Guoxiong quickly said it was nothing, and also said a few words that he probably had prepared in advance, saying that once you come to a job, you should do your job well.

Li Shu was naturally capable of handling things well.

Seeing Zhao Yong start to reach into his pocket, he quickly pulled out a box of Dongdu from his trouser pocket.

"Wow, you're really generous." Zhao Yong was surprised.

Li said he didn't smoke, and casually stuffed the whole pack of cigarettes into Zhao Yong's hand.

I didn't dare to give it to Xu Qiang before, mainly because the two of them were too far apart in rank. Zhao Yong was different. Although he was also a leader, he was more like a comrade-in-arms who would be eating from the same pot in the future.

Zhao Yong hesitated for a moment, but still accepted the call. He then explained, "It's a good thing you don't smoke. I didn't smoke when I first came here either. I was corrupted by Lao Han and the others. There's nothing I can do about it. I'm staying up all night every day, and I just can't take it anymore."

As he spoke, he patted Li Shu on the shoulder and said, "You two better be prepared, don't even think about sleeping tonight."

Li Shu then asked what kind of case it was.

I wanted to ask before, but everyone else was busy and I didn't want to bother them.

Judging from the scene, almost everyone was comparing fingerprints, and Han Jianjun's eyebrows were constantly furrowed, Li Shu could guess that the case was urgent.

Zhao Yong didn't hide anything and said, "In March of this year, the city merged to form a high-tech zone, and then, in the area of ​​the management committee of the high-tech zone, three burglaries occurred in ten days starting from the 17th."

"The main targets were foreign-invested enterprises in the industrial park. Last Friday, the 25th, was the last incident. When the suspect was committing the crime, he was discovered by patrolling security guards, who then opened fire, killing one security guard and injuring another."

"This matter has a very bad impact. After all, the High-tech Zone was just established, and the City Games are just two months away. The security situation is also very important, so this case is quite urgent."

As he spoke, he gestured for the two to get their food.

The dishes were pretty good; they even made braised pork today.

When they were getting their lunchboxes, Zhao Yong also took out a bottle of baijiu (Chinese liquor) from the cabinet where the lunchboxes were kept and asked the two of them if they wanted some.

Tan Guoxiong was about to decline when Li Shu quickly nudged him under the table.

He immediately changed his tune, saying he could drink a little.

Li Shu quickly took the wine cup and poured wine for Zhao Yong.

"I can't help it, I haven't slept for 40 hours, I really can't hold on without a drink." Zhao Yong downed his drink in one gulp and grinned widely.

Looking at his bloodshot eyes, you can imagine how long he had been suffering.

There is no way.

The shortage of police force is not only a problem in terms of operational capabilities, but also in terms of technical capabilities.

There's only one large-scale technical team in the whole city with some equipment, so the technical needs of many cases can only be kept within the team.

In Zhao Yong's words, it was like working non-stop, like a beast of burden.

Just then, a man in his thirties walked over.

With his hair parted to the side, wearing a striped shirt and carrying a leather bag, he slammed his hand on the table and stared straight at Zhao Yong: "Old Zhao, it's been three days, a full three days! I don't expect you to be able to match it for me, but at least give me a reasonable timeframe."

As he spoke, he grabbed the bottle and took a swig.

"Hey, I'm still drinking."

Zhao Yong snatched it away, quickly wiped the bottle opening with his clothes, and then said, "Old Lin, it's not that I don't want to give you a definite answer, but look at what I've done to it."

He pried open his eyelids to show the man.

Then he said, "Old Lin, don't rush me, it's no use. It's just this slow. If you really want it to be faster, go find Director Tang and ask him to approve the funds to get us AFIS installed. If it's slow again, I'll be the first to apologize to you."

Old Lin rolled his eyes, leaned forward and grabbed Zhao Yong's shoulder, pleading, "Brother, you're my brother, please, hold on tighter, I'm so anxious I'm losing hair, have some pity on your brother, I don't have much hair left."

He scratched his thick hair, glanced at Li Shu and the other man, and turned to leave.

Zhao Yong muttered, "I'm your brother," and then introduced the man.

His name is Lin Wanping, and he is the deputy captain of the first brigade of the detachment.

The detachment has a total of five battalions.

The technical aspect is handled by the Third Brigade, and the First Brigade is the Major Crimes Brigade; this case is their responsibility.

Li Shu nodded.

I was originally going to ask about the progress of the comparison, and how urgent the situation is now.

Now there's no need to ask anymore.

It's estimated that Lin Wanping's house has already burned down.

But there's nothing we can do; the efficiency is just that low.

Now the entire technical team has been mobilized; it feels like everyone who can be mobilized has been mobilized.

Including the two new recruits, a total of 11 people were involved in the fingerprint comparison work for this case.

They're veterans; let's say he compares five hundred file cards a day.

This already includes staying up all night and only getting three or four hours of rest a day.

Unfortunately, fingerprint matching is too time-consuming.

Even if he had ten people that day, he could only compare five thousand samples.

That's far from enough to reach ten thousand.

The municipal bureau has over 16 fingerprint files.

It wasn't actually three days.

Only after on-site investigation was this one and a half fingerprints discovered.

Therefore, the accurate screening time is the 40 hours mentioned by Zhao Yong.

That would be far from enough to complete the comparison work.

And most importantly, even after filtering, it might not be as good as others.

Many crimes are committed by itinerant criminals, and it is entirely possible that the perpetrators are gangs that have migrated from other areas.

Thinking about all this, Li Shu felt heavy-hearted as he realized how tough his future work would be.

This is a major case after all, with one dead and one injured.

Moreover, given the perpetrator's frenzied crimes, they are unlikely to stop easily.

So, since they have fingerprints, there is hope of catching them, and Li Shu wants to do his part.

There's no chance I'll become a criminal investigator for at least a few years.

But even if I stay in a technical position, I can still help solve cases and be a behind-the-scenes hero.

Thinking of this, while tidying up his dorm after dinner, Li Shu couldn't help but look through the fingerprint comparison data on the system.

Zhao Yong just mentioned AFIS.

This thing is called an automatic fingerprint recognition system.

It started developing abroad first, while research in China only began in the 1980s. Now, we have our own self-developed system.

In places like Ningshan, and neighboring Pingyu and Yanling, projects have begun to be launched one after another.

Professor Li had introduced this to Li Shuting more than once when he was in school.

This thing is definitely far more efficient than humans, and it has many advantages.

The only downside is that it's too expensive.

The hardware and software together cost one to two million yuan per set, which is almost half of the Nanjiang Municipal Public Security Bureau's annual criminal investigation budget.

We've acquired the key equipment, but we still need someone to know how to use it.

Li Shu suddenly recalled the conversation between Han Jianjun and Xu Qiang.

No wonder Han Jianjun was so angry; it's probably because he wanted to find a bachelor's degree-level talent to help him introduce and make good use of this system.

So thinking about this right now is useless.

Li Shu then tried to find ways to improve the comparison efficiency by looking at the knowledge provided by the system.

Yes, there are indeed some, and quite a few at that.

For example, in this case, the system describes how a criminal investigation expert developed a set of 18 systematic methods that cover all aspects of fingerprint comparison.

The most crucial method is a so-called partition comparison method, which can greatly improve fingerprint comparison efficiency.