Chapter 1134: Tree Diagram

Early morning.

Jiang Yuan sat upright in front of the computer with a cup of green tea, watching the surveillance footage on the screen.

To Jiang Yuan's left were Wang Chuanxing and three technicians from the Image Investigation Brigade. The four of them were responsible for converting his direct orders into executable commands, and they were all busy and flustered. Many times, a simple order from Jiang Yuan would require one person to search for a long time to complete.

To Jiang Yuan's right were Yuan Bomin from the Anti-Drug Detachment and two other anti-drug police officers. Yuan Bomin was the person directly responsible for the case, and the other two anti-drug police officers were more familiar with the environment and drug dealers near Wu Jiao Ge.

Behind several people were Huang Qiangmin, Dai Mingsheng, and many other leaders, all with furrowed brows and serious expressions. Front-line police officers only need to solve the case, but leaders have to consider more.

Wei Shiyan was a clear stream in the command room. He held a cup of iced Americano and also sat upright in front of the computer, just playing small games intermittently and reading novels by the way. There was nothing for him to do here, and everyone didn't expect him to do anything, but Wei Shiyan himself was too interested in investigation, so naturally, he didn't want to give up Jiang Yuan's special investigation this time.

Jiang Yuan didn't look fast. Although there were multiple screens in front of him, he basically only stared at the main screen. The screens next to him were only used for assistance and were constantly required to be switched back and forth.

Whether it was Wang Chuanxing or Yuan Bomin, watching Jiang Yuan's operations was like looking at flowers in the fog. That is to say, the three technicians from the Image Investigation Brigade knew what Jiang Yuan was doing, but they were also busy running for their lives and couldn't even look up.

Working like this until after 2 o'clock in the morning, Jiang Yuan felt that the tea leaves had no taste, so he waved his hand and said: "Pause for a while, rest for 10 minutes."

Yuan Bomin was smoking one cigarette after another. Hearing Jiang Yuan's order, he became anxious all of a sudden.

However, seeing the three technicians from the Image Investigation Brigade slumped on their chairs as if they had been granted amnesty, Yuan Bomin could only suppress his urgent mood and sit on the ground in a muffled manner.

Huang Qiangmin was already relatively familiar with him. He handed him a bottle of water and said: "Looking for people without clues is like looking for a needle in a haystack. Don't be anxious."

"I know." Yuan Bomin gave a wry smile: "In these three days, we haven't been idle, but we haven't found any new clues... I'm just worried that in three days, anything can happen. Sigh, I shouldn't have let Old Hong go undercover at that time. He went up when he saw an opportunity. He was too greedy."

"This kind of thing is not what one wants..." Huang Qiangmin comforted Yuan Bomin a few more words and said: "Otherwise, why don't you chat with Jiang Yuan? Based on my understanding of him, if he hadn't achieved phased results and had certain clues, he wouldn't have rested so quickly."

Yuan Bomin was originally worried about disturbing Jiang Yuan. Hearing Huang Qiangmin say this, he couldn't sit still immediately, thinking that if there were really some clues, he could cooperate offline.

Yuan Bomin hurriedly came to Jiang Yuan's side and asked: "Team Jiang, I want to ask about the progress, is it convenient?"

"Oh, let's stand and talk. We've been sitting for too long. It just so happens that I'm making some tea." Jiang Yuan was right next to the command console, pouring tea leaves into his cup.

Yuan Bomin said politely: "Let me do it."

"No need, just take it as a rest, and change your brain by the way." Jiang Yuan said, then beckoned Wang Chuanxing to come over and said: "Print out the tree diagram I just filled in."

"Yes." Wang Chuanxing operated immediately. In two minutes, he brought over a piece of paper.

Jiang Yuan laid it flat in front of him and said: "Team Leader Yuan, look, this tree diagram was filled in by me casually. It's a bit sloppy. Now there are only treetops and no trunks. Let's look at it like this for the time being..."

Yuan Bomin couldn't care about talking. While nodding and watching, he saw more than a dozen names or code names on the first page, some familiar and some unfamiliar. They were either connected by lines or independent on the side. In addition, there were numbers 1, 2, 3, 4 before each code name.

"These are?" Yuan Bomin could guess, but didn't dare to guess.

Jiang Yuan poured boiling water and said: "These are all drug dealers just confirmed. The bottom row, the one marked 2 on the left, is the small drug dealer at the Long Sword level, and the one marked 1 is the drug addict. The one marked 3 is the drug dealer at the Red Face level, and 4 is the drug dealer at the Li Si Ge level."

"The drug dealer behind this 4 is called Fat-Wrapped Muscle?"

"I gave him the name, because his weight and muscle content are significantly greater than normal people, and his appearance is also relatively fat and sturdy. He should have used steroids or something..."

"Does the mark 4 mean he is a drug dealer at the Li Si Ge level? Or is it Li Si Ge himself?" Yuan Bomin's mood was very nervous, but on the outside, it couldn't be seen at all. It was purely a state of occupational disease starting to take over.

Jiang Yuan nodded and said: "I think it's about the same level, but it's very likely not the same person. From the information I just saw, his sales area is different from Li Si Ge's. His downstream, currently confirmed, are two, which are below the tree diagram."

"This... how was this found?" Yuan Bomin was unbelievable. Catching small drug dealers at the Long Sword level, which is the marked 2 level, is a daily task for them. But catching 3-level drug dealers like Red Face is impossible to be foolproof. It often requires a relatively long period of research and judgment, and a lot of time and energy to catch them.

The difficulty of Li Si Ge, who is one level higher, is naturally greater. This time, he was a little anxious, and such a big crisis appeared.

For the Anti-Drug Detachment, through means similar to following the vine to find the melon, touching three layers up is the end. It is almost impossible to touch further up. Of course, this is aimed at drug gangs with a certain scale, not a makeshift team.

Drug dealers have their own way of survival. It is normal for one or two small miscellaneous fish below to be caught. But if a 3-level drug dealer is caught, the 4-level and 5-level drug dealers on the chain will definitely take some self-protection measures.

Moreover, unlike the small drug dealers below, the larger the drug dealer, the lower the frequency of transactions, and they have money to make preparations in all aspects. Not only is the probability of explosion low, but the awareness of prevention is also strong.

This is not comparable to the 2-level small drug dealers. 2-level drug dealers are equivalent to the cattle and horses in the drug world. They are basically in a state of stopping when they stop. Many people are in a state of selling to support taking. If they don't work for a few days, not only will the upstream and downstream urge them, but they will also lack money to use.

Therefore, Yuan Bomin found it difficult to understand how Jiang Yuan confirmed the people.

Jiang Yuan understood Yuan Bomin very well. He was working with the temporary +1 skill tonight. With the LV7 skill, and it was in terms of image investigation, it was normal for Yuan Bomin not to understand.

Jiang Yuan thought about it and explained: "I actually checked up level by level. Speaking of which, it's simple. It's just to find these drug addicts you confirmed first, and confirm their upstream through confirming the transaction behavior."

"Even if there are new cameras, they shouldn't trade under the cameras."

"No need to see the transaction behavior, just look at the state of these people. A drug addict went out swaying, and after passing a certain intersection, he came back a quarter of an hour later, and found that he was full of energy, and his eyes were full of expectation. What does this explain?"

Yuan Bomin was stunned: "Took drugs, at least bought drugs?"

"Reasonable reasoning, right." Jiang Yuan subconsciously glanced at Liu Jinghui in front of him and added: "The basic principle is like this. I look at the surroundings of this drug addict's transaction location. If there are other drug addicts coming to buy drugs, or transactions appearing in other places, then we can consider it together. When did the seller come, and which intersection did he need to pass through to come over..."

Jiang Yuan gestured twice and said: "We look at vehicle investigation, and now it's basically the same strategy. But vehicles have license plates and different shapes, and the number is relatively much smaller than people. Just run the software directly. As for people, even if there is a gait recognition system now, the success rate is not high, and it is easy to miss people."

"Like this... will this be very slow?"

"Am I slow tonight?" Jiang Yuan smiled.

"It's not slow, it's not slow." Yuan Bomin shook his head repeatedly, then hesitated: "I still don't quite understand..."

"When image investigation looks for people or vehicles, it doesn't mean following the cameras all the way. If you see a car heading east, you don't actually need to keep confirming where it goes. You just need to find the vehicle at the nodes on the essential route to the east. In fact, most of the time, computer software helps with this work."

As Jiang Yuan spoke, he briefly explained his understanding of gait analysis, and Yuan Bomin's face suddenly became animated.

"I'll organize a team to make arrests!" Yuan Bomin said with a smile: "If you had just said so earlier, we would have already caught them by now."

"I suggest not making arrests yet. Or perhaps just arrest one or two selectively to confirm the identity of this 'fat-wrapped muscle'." Jiang Yuan called out to stop Yuan Bomin, then added: "For the majority, don't move for now, just keep track of them."

Yuan Bomin hesitated and said: "If the 'fat-wrapped muscle' you mentioned isn't Brother Li Si, could he perhaps know where Brother Li Si is?"

Jiang Yuan: "Horizontal investigation is difficult. Wait a little longer. Once I confirm the 'fat-wrapped muscle's' supplier, he might be able to find Brother Li Si!"