National Forensic Doctor

Qingbai City is a large city with a total of five districts spread out over a wide area. The third most important case among the three fatalities on the Jingyang Line occurred in Qingbai City.

As a result, Qingbai City and the provincial government went to war. Because according to expert judgment, the murderer must be familiar with railway lines and railway timetables. At the same time, he should also be familiar with local conditions. The last point makes experts have great expectations for Qingbai City.

After all, the population of Qingbai City 20 years ago was not large, and it was dominated by state-owned factories and mines. There was little movement of people, and the probability of finding the murderer was high.

However, the results did not go as expected, and this was put on hold for more than ten years. Although it was started in the middle, there was no result and it was still shelved.

Half of the police officers working at the time have retired.

The person with the highest position remaining is Zhang Shizhong, captain of the Internet Security Brigade of the Qingbai City Criminal Police Detachment. He is also in his fifties, but when talking about the three corpses on the Jingyang Line, he still talks clearly and clearly has a deep memory.

A few people simply found a restaurant and chatted while eating.

The restaurant is a fresh fish restaurant, specializing in river fresh food, and does not pursue any special cooking methods. It is just a pot of fresh fish, each weighing about half a catty, and stewed in stock, which is truly fresh.

The fish was so stewed that you had to be very careful when picking it up, as the bones separated when you put it in the bowl.

Of course, the most delicious thing is the soup, which is so fresh that you can’t help but drink it one mouthful after another.

The tofu in the soup is even more delicious than the fish, but if you eat a few bites of tofu and then a bite of fish, you will feel that the fish is delicious. If paired with a bowl of soup, it is simply delicious.

Jiang Yuan drank a bowl of soup and a mouthful of meat until he was sweating all over, and then asked Zhang Shizhong: "I see that you have taken a lot of footprints in the surrounding area. Didn't you find any suitable clues at the beginning?"

Zhang Shizhong put down his spoon, wiped his mouth, shook his head, and said: "Collect footprints and collect them. In the end, only a few people can be found. Moreover, the collected footprints are far away from the crime scene, and no suspects can be contacted." .”

The crime scene was on a train track. There were gravel on both sides of the track, so it was basically impossible to leave footprints.

Jiang Yuan didn't expect this, so he took two sips of soup and continued: "Where are the witnesses? Maybe we can find the witnesses through the footprints?"

Zhang Shizhong looked at Jiang Yuan strangely and said, "You can't determine the time just from the footprints. The person who left the footprints may have passed by a few hours ago, or he may have passed by dozens of days ago. It is difficult to find Be an eyewitness.”

"What you are talking about, in fact, the freshness of the footprints is not possible dozens of days ago. It rained two days before the incident, and everyone was affected by it. Looking at the detailed analysis of the footprints, on the day of the incident Added together with the footprints from the previous day, there are at least ten copies."

"I don't know about that." Zhang Shizhong shook his head helplessly: "As for the footprints, we actually asked experts to look at them at the beginning, but we always found the person first and then compared the footprints."

"Well, today's technology is better than before." Jiang Yuan nodded. Mu Yong admitted that technology has always been moving forward. Although many technical masters have emerged in domestic footprint identification in the past few decades, the 53-year-old sheep herder has also become a domestic leader with his "footprint tracking" technology. The top criminal investigation expert, nicknamed "God's Eye".

However, future generations do research by standing on the shoulders of their predecessors. After half a century of development, the overall identification level has improved a lot, and they have also summarized some experiences and skills that their predecessors did not possess.

This series of techniques has experienced an explosion in the past twenty years.

When Eucalyptus trichosanthes appeared, footprint identification was already relatively common. It was not a big problem to determine age, gender, height, etc.

But in terms of usage, finding people through footprints is not mainstream. The main thing is to find the person and verify it through footprints, and rely more on shoe prints than footprints.

This actually has something to do with the times. People around 2000 would not have a closet of shoes at home. Normal people only need one or two pairs of shoes to wear. They don’t change their shoes very much on a daily basis until the season changes. On the other hand, shoes will not be thrown away easily until they are worn out. Shoe repairmen are ubiquitous on the streets and alleys, and everything from soles to uppers to uppers can be repaired.

Therefore, even if the suspect throws away the shoes, there will always be someone from the rag picker to the waste collector to the trash collector to the trash picker who will collect the shoes.

This provides the basis for comparing suspects through shoe prints.

Nowadays, such opportunities are becoming less and less. Ordinary people change shoes at every turn, and some people sell second-hand shoes. Shoes thrown into the trash can may not be picked up...

From the identification of shoe prints to the identification of footprints, it is another layer of difficulty, and it also requires the continuous summarization of experience by later generations. To put it more academically, the regression formula must at least be written.

In fact, in the past two decades, various scientific and technological achievements have been explosive. Although there are some shabby articles with a lot of words to defraud funds, there are also some people who have actually made achievements. In the field of footprint identification alone, the Scientific and Technological Progress Awards were given out to people of all ages.

Of course, there are inevitably some people who don’t trust the Science and Technology Progress Award. In this regard, scientists in the field of basic science may not necessarily be able to debate scriptures, but technicians in the field of criminal investigation want to prove themselves very easily. Brothers who don’t believe it, find an important person. Just pee in a special place and leave a peeing footprint. Looking back, you can catch yourself in a few days.

Zhang Shizhong only has a rough idea of ​​footprint identification and so on. He doesn't know where the limits are or the level of experts.

However, seeing the confidence on Jiang Yuan's expression, Zhang Shizhong said: "If the murderer can be traced through his footprints, it will definitely be no problem..."

"We haven't reached that step yet." Jiang Yuan coughed twice and emphasized: "The footprints at the scene are far away from the murder scene. It is impossible to say who left them, and there is no way to prove that they were left by the murderer. Let's start with The search for witnesses begins.”

"It's hard to find someone from 20 years ago using their footprints." Zhang Shizhong was a little surprised.

Jiang Yuan said "Yes" and said: "In terms of difficulty, it is about the same as finding the murderer in ordinary cases."

He used LV5's footprint identification and added a layer of temporary skills +1 to find the murderer. Later, he would have to use LV5's imaging. To be honest, just this skill combination could kill him. Eucalyptus may be easier than killing one now.

However, even for LV6's footprint identification, it is impossible to directly call out the murderer's ID number. Therefore, there must be no shortage of resources to match it. There are investigations that need to be done, people that need to be found, and inquiries that need to be done. , are all indispensable.

In other words, Jiang Yuan can reduce the difficulty of finding people from a technical perspective, but it still requires a lot of resource support.

Judging from the current situation, it may take hundreds or thousands of man-days just to find these passers-by, and the results found may not be usable.

Zhang Shizhong could think of this immediately, and his expression became serious.

In addition, you can brag about it, but the expenses and resources used are real.

dilute……

Huang Qiangmin drank the soup and made a satisfied sound.

Zhang Shizhong couldn't help but look over and said helplessly: "Huang Bureau, our Qingbai City is not a wealthy city..."

"We came out this time to work for nothing for you. Not only Jiang Yuan went to fight, but Wu Junhao and so many people helped, and we didn't even get a penny of your salary." Huang Qiangmin said calmly: "As for the funds, Expenses, this is mainly determined by the direction of the eucalyptus, and I don’t mean to waste your funds..."

"Of course, of course." Zhang Shizhong quickly apologized: "That's not what I meant, I meant... Hey, okay, I'll report to the boss. As long as I can break the case, I'll do anything."

Jiang Yuanwen said warmly: "This project has been separated for too long. It needs to be rebuilt. No matter which angle it is carried out from, there are always several steps. It will cost a lot of money and manpower. You have to be prepared."

"I understand. Hey, I understand. Our bureau has actually discussed the funding issue a long time ago. However, there is a gap between thinking about paying for it and actually looking at the bill...Long live understanding, long live understanding." Zhang Shizhong smiled helplessly as he spoke. As the saying goes, you don't know how expensive firewood and rice are when you are not a family member. Of course, the Qingbai City Bureau has intentions for Guzi, and the pain is real.

Huang Qiangmin scooped fish soup for Zhang Shizhong, and after he was over his heartache, he said: "This project must be supported by the provincial departments and ministries. The railway side is probably willing to give some support as well. Cui Xiaohu, Cui Chu, also Li Chuzheng is helping us run..."

Zhang Shizhong's mood suddenly improved a lot: "It would be best to have support..."

"An interrogation expert from the ministry should come tomorrow." Huang Qiangmin looked at Jiang Yuan: "If we can find someone."

Jiang Yuan nodded and said nothing. After such a long time apart, it was easy to identify the footprints, but it was difficult to find the person through the footprints.

Fortunately, Qingbai City has a large population of factories and mines. Although there are self-employed people in small markets near the railway line, most of the pedestrians should still be factory and mine workers and their families. In fact, most of the self-employed people in the market are also family members and relatives of factories and mines. As long as you work hard to find these people, there are always traces to follow.

Furthermore, Jiang Yuan is not pursuing finding the owners of all the footprints. He just wants to find as many people as possible, plus the records from that year, and then decide in which direction to advance.

So, on the second day after arriving in Qingbai City, Jiang Yuan's temporary skill +1 was added to... image enhancement LV5.

With the help of more than 400 minutes of image enhancement, Jiang Yuan first processed the pictures of various footprints.

In the office that day, the roar of computers never stopped.

Zhang Shizhong followed several leaders of the Qingbai City Bureau back and forth. Hearing the newly purchased high-performance computers shouting louder than the women in Shang K, he couldn't help but scream inwardly.

The machines are used so hard that when it comes time to use people, I don’t know how they will be used.