"Lu, working so early?"

"How was your Spring Festival?"

Old Bai looked radiant, even more energetic than Yang Sen.

"Not bad, just eating and drinking, took a few days to rest."

Lu Chuan had completed the preliminary processing of the fingerprints, and proceeded with feature marking and data calculation.

At this moment, the fingerprints were already dragged into the fingerprint matching system, and in a few minutes, there should be results.

"Brother Bai, you look so radiant, you must have had a good rest during the Spring Festival."

Unlike the front-line, the crime scene investigation team does not have to be on duty during the Spring Festival.

Old Bai nodded: "I'm one year closer to retirement, of course, I'm happy."

Old Bai's birthday is in January, he's already fifty-six years old.

Four more years to go, as long as they pass smoothly, Old Bai's happy life is just around the corner.

Yawn...

"Brother Yang," looking at Yang Sen who just yawned, Lu Chuan stood up with a cup of tea: "What's up with you, looking so tired? Stayed up last night?"

Yang Sen's eyes were dark, his complexion dull, clearly hadn't rested well.

He yawned again, gulping down a big mug of tea: "Don't mention it."

"Spring Festival vacation was seven days, except the night we went to Director Wang's house for dinner, I spent six days accompanying my son studying, going to bed past one every night."

He yawned again: "Waking up at seven in the morning to study..."

"This studying now... I never had it like this back in my day."

Lu Chuan and Old Bai exchanged a glance and shook their heads.

This is something they couldn't help with.

Actually, Yang Sen's son was fairly easy-going.

At least he knew to study, and his grades were quite good too.

A pre-entrance exam before the break, Yang Sen said he scored over five hundred seventy points.

That's already a very good score.

As long as he maintains it, getting into the early admission batch at Public Security University is likely.

And there are still four months before the college entrance exam, with some effort, he might even aim for six hundred points.

With that score, he can go almost anywhere.

Lu Chuan got into university with that same score back then.

However, it seems Lu Chuan didn't work that hard back then.

Or maybe he did, but just forgot?

Senior year is a magical period, some things are vividly remembered, and others seem forgotten.

Lu Chuan only knows that, regardless of academic performance, that was a time for desperately striving.

Of course, Yang Sen's household wasn't the only one with a child taking the college entrance exam in the Criminal Investigation Team this year.

Middle age comes with a bunch of overwhelming responsibilities.

Yang Sen let out a long sigh, patting his head: "Alright, let's not talk about this."

"Lu, what are you busy with so early?"

The tradition in the crime scene investigation office in the morning is to drink tea; since Lu Chuan joined, a new hobby has been cultivating flowers.

"Oh, nothing much," Lu Chuan shook his head: "Before the holiday, I went racing with my cousin, found a fingerprint at the racetrack that looked familiar, didn't have time before, today at work, I figured I'd run it through the system to see if there's a match..."

Ding!

Before Lu Chuan could finish, a clear ding sound came from the computer.

The three of them were all too familiar with that sound.

"Did it match?"

Yang Sen looked stunned, he was just about to ask where Lu Chuan was racing, and now it's matched?

Lu Chuan was also a bit surprised.

That day he only felt the fingerprint in the photo seemed familiar, but didn't think much of it.

It's like running into a woman on the street who looks like your ex, you can't go up to each one and yell.

"Let's see what case this is."

Old Bai was the first to move to the computer.

Clatter!

The enamel mug in his hand fell to the ground.

"Old Bai, what's wrong?"

Yang Sen and Lu Chuan walked over, Old Bai pointed at the screen: "You... you all... look... look for yourselves!"

A match!

"The Qingjian District building fall case."

Half a month ago, when Lu Chuan was participating in the fingerprint battle at the municipal bureau, he encountered this case, which was within the scope of the thirteen unsolved homicide cases of the fingerprint battle.

Moreover, at the time, the suspect's fingerprints from the case matched the ones from the case nine years ago where Criminal Investigator Zheng Bin was killed, leading to reopening the investigation.

The second action group of the Criminal Investigation Team, led by Ren Qiang, was responsible for this case back then.

But even after exhausting all resources back then, no results came of it, so even though it was reopened, there was no significant progress.

Lu Chuan never imagined that a casually found fingerprint at the racetrack would lead to a match.

Realizing this is not just a possibility of solving the Qingjian District building fall case.

From the fingerprint match, the case of the killing of Criminal Investigator Zheng Bin nine years ago seems to have the same perpetrator as the Qingjian District building fall case!

Seven minutes later.

Criminal Investigation Team morning meeting room.

The discovery by the crime scene investigation was so significant, the post-holiday meeting could not continue.

Qin Yong was onsite receiving Lu Chuan's report.

"The suspect's fingerprint was discovered before the Spring Festival, on the 29th of the twelfth lunar month, at Racetrack No. 3."

"The racetrack in the North Suburb?"

Qin Yong clearly knew the place.

Lu Chuan nodded: "That's the racetrack. At the time I found the fingerprint on a photo, it seemed a bit familiar, so I took a picture."

"Today at work, I did a verification analysis and it matched the Qingjian District building fall case from five years ago."

"Also, when I studied the fingerprint of the Qingjian District building fall case suspect as part of the fingerprint battle, it matched the one from nine years ago when Criminal Investigator Zheng Bin from the Water District Criminal Investigation Team was killed at Temple King Mountain."

One fingerprint, solved two cases.

"Do we have information on this person?"

Lu Chuan nodded: "Yes, his name is Wang Qi, works at Sanyo Auto Repair Factory, he's an auto modification technician."

"Is there anything else?"

"That's all."

The part Lu Chuan was responsible for, has been completed.

Now it's about capturing and interrogating the suspect.

"Ren Qiang!"

"The Qingjian District case from five years ago was your responsibility, the capturing operation is yours to handle!"

"Yes!"

Ren Qiang had been waiting for this, the Qingjian District building fall case may be five years old now, and he wasn't the lead of the action group back then.

But they still review the case every year.

Occasionally when driving past Qingjian District, Ren Qiang would even stop to take another look around.

Half a month ago, there was a major breakthrough in the case.

The perpetrator of the Qingjian District building fall case, and the suspect from nine years ago when Criminal Investigator Zheng Bin was killed in the Water District, are indeed the same person.

Unexpectedly, just half a month later, Lu Chuan had directly identified the suspect's information!

Sanyo Auto Repair Factory!

Wang Qi!

This time, let's see where you can run to!

Moreover, Ren Qiang was very curious about one thing: how on earth did the perpetrator escape the police's sight back then.

To know, they had turned Qingjian District inside out trying to catch the perpetrator.

Everyone had DNA samples collected, but no match was found with any residual bodily fluids in the victim's body.

Based on the time of death, they narrowed down everyone who had been in and out of Qingjian District back then, there shouldn't have been any oversight.

How did they do it?

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