Monday.

It was raining in Ningtai County.

The abundant rain fell from the south to the north, from the east to the west, turning the view outside the window into a watery land.

Wu Jun leaned against the windowsill, smoking a cigarette in loneliness, and said slowly, "If someone dies today, we're in trouble."

Jiang Yuan looked up from behind the computer screen and said, "It's not that coincidental."

"Don't talk about coincidences." Wu Jun waved his hand and said, "If you talk about coincidences, they will really happen. Back in the day, we encountered a case just like that..."

Wu Jun then told Jiang Yuan an old story.

Jiang Yuan silently looked at the training materials on the screen.

In the field of fingerprint identification, his knowledge was constantly improving.

However, forensic science and technology were different from ordinary science or technology in that they required external support.

Perhaps it was because the police didn't believe in fighting alone, and no one had ever considered creating a technology that would allow the police to work alone.

On the contrary, forensic science and technology often required the cooperation of colleagues, and even the coordination of an entire system.

For example, fingerprint technology relied on the fingerprint database, no matter how strong Jiang Yuan's identification ability was.

And the fingerprint database was actually accumulated bit by bit.

From Jiang Yuan's perspective, what currently hindered the further development of fingerprint technology was the construction of the fingerprint database, as well as the entry and annotation of new fingerprints.

This also required the cooperation of the entire police system.

In terms of forensic science and technology, this was usually reflected in various trainings.

Explanations of the latest technology, promotion of novel techniques, and the use of more mature techniques...

The police system might be the unit in the country that liked training the most, but even so, the grassroots strength of the police system was still weak.

And the task of entering fingerprints was not something that could be solved by working long hours. It required more detailed work arrangements and the dissemination of work methods.

Currently, it seemed that the system would not provide this kind of managerial skill.

Jiang Yuan tried to learn it himself.

Bang!

Wei Zhenguo rushed in from outside the door.

"Is someone dead?"

Jiang Yuan and Wu Jun turned their heads at the same time and exclaimed in unison.

Wei Zhenguo cautiously looked behind him, thought for a moment, and said, "No... no one died, right?"

"Oh... I see. That's good..." Wu Jun breathed a sigh of relief, stopped smoking, and quickly sat back in his seat, silently touching the statue of Guan Yu.

Jiang Yuan looked at Wei Zhenguo and smiled, "Captain Wei, what's the matter?"

"Oh, that... Li Suigong is back, bringing the suspect of the fraud case." Wei Zhenguo gasped for breath and smiled, "They've taken him to the processing center."

Jiang Yuan looked outside in surprise, "At this time? Did they stay up all night to catch him?"

"More than that, they've been chasing him for three days. I just found out. Li Suigong received an alarm from the checkpoint in Qi Province and went there. It's a one-way trip of 1,200 kilometers and a round trip of 2,500 kilometers. They even staked out for a day in between." Wei Zhenguo shook his head in admiration, "Economic investigation is not easy."

"Then let's go take a look." Jiang Yuan quickly got up.

When they entered the processing center, they saw Li Suigong and another police officer filling out forms, while their colleagues were already fast asleep on the sofa.

There weren't many people in the processing center, but there were always people coming and going. Li Suigong pretended not to see them.

"Captain Li." Jiang Yuan greeted him.

"Jiang Ge." Li Suigong quickly shook Jiang Yuan's hand. He had come to Qi Province because of Jiang Yuan, and now that he was back, he naturally wanted to make a good impression.

"Don't be so polite. I heard you caught the suspect?"

Li Suigong nodded heavily, then looked a little embarrassed and said, "We followed the trail of the person, but unexpectedly, he had already transferred the money. The funds we recovered in the end may be less than 300,000."

He knew it was impossible to recover all the money. Moreover, although 800,000 yuan was a lot for ordinary people, various channels of funds were not meant for ordinary people. So, from the beginning, Li Suigong didn't care about where the money went.

He would ask and investigate after catching the suspect, and sure enough, only a little over 200,000 yuan was left.

The rest of the money had either been squandered by the suspect or transferred.

But based on Li Suigong's experience, most fraudsters would rather go to jail than repay the money.

Jiang Yuan naturally wouldn't blame him for not recovering all the money. He also shook Li Suigong's hand and said, "It's best if the case is solved. The rest is not something we can control. You guys have worked hard on this trip. Three or four days, a round trip of 2,500 kilometers, it's really tough."

"It's nothing. The driver is the one who's more tired." Li Suigong laughed.

Only then did Jiang Yuan know that the Economic Investigation Brigade also had a driver. It was indeed a well-funded brigade.

Wei Zhenguo glanced at Jiang Yuan, who seemed inexperienced, and pulled him aside, saying in a low voice, "Captain Li, you go ahead with your work. We'll sit back and leave later."

"Okay." Li Suigong quickly turned around and went back to fill out the forms.

Nowadays, there were procedures for solving cases. If you made a mistake, you would be filling out forms until you died.

Wei Zhenguo whispered to Jiang Yuan, "Nowadays, well-funded police departments like to have drivers. They don't need to use the quota for auxiliary police officers, and they can help with driving and other things. It's very practical."

"So, there's a shortage of auxiliary police officer positions?"

"When is there ever enough personnel positions?" Wei Zhenguo chuckled.Jiang Yuan sent messages to his father and Jiang Yushan respectively.

Their calls came in shortly after.

Jiang Yuan stepped out of the office area to speak more conveniently.

What he knew was actually not much, and some of it was extremely unfriendly to the victim.

But for Jiang Yushan, hearing that the suspect was brought to justice made him very happy.

At noon.

Jiang Yuan was still hesitating whether to invite Li Suigong for a meal or let him sleep first and invite Strong for another meal, when the system interface suddenly popped up:

Task completed: Find people

Task content: A qualified forensic can find people (alive/corpse) through various details.

Task reward: Footprint identification (lv3)

Jiang Yuan knew then, the suspect must have confessed.

With the domestic mechanism, as long as there is a confession and certain physical evidence, during the litigation stage, the defendant can only pursue the severity of the sentence at most. There is almost no chance of escaping punishment.

Just as he was thinking about this, Li Suigong's call came in.

"The suspect has confessed, let's tidy up the files later, and we will prosecute as soon as possible. As for returning the stolen goods, it might be a bit later." Li Suigong explained to Jiang Yuan.

Jiang Yuan thanked him again before ending the call, feeling that helping others was quite hard.

Turning back, Jiang Yuan looked closely at the introduction of lv3 footprint identification.

The most prominent feature of footprint identification is its extremely high extraction rate.

Almost every crime scene can extract footprint marks.

In comparison, although fingerprint and DNA technologies are more mature and identification of the same is more reliable, in the current crime environment, the extraction rate of fingerprints is only about 15% or less, and the extraction rate of DNA is even lower.

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When facing cases where DNA and fingerprints cannot be extracted, footprints may be the only reliance.

Jiang Yuan casually made a soup with cigarette ash, stepped on it, twisted it a few times, then stepped on the other side, and began to observe the left footprints.

Sure enough, countless pieces of information rushed into his mind.

Without hesitation, Jiang Yuan got up and went to the trace detection office next door, opened the door, and asked, "Brother Wang, do you have any cases with footprints for me to work on?"

Footprints are also within the scope of trace detection work.

Wang Zhong was taken aback by the call, and then asked in confusion, "What do you mean by cases with footprints?"

"I've been studying footprint science recently and I want to find a case to do as homework." Jiang Yuan expressed very modestly.

Wang Zhong was involuntarily invigorated!

A few months ago, Brother Jiang also said the same thing about fingerprints! Then he solved so many cases one after another...

"Yes, yes, we have plenty, just wait a moment."