Chapter 1302: One Finger Sets the Universe

Jiang Yuan took Liu Jinghui, slipped two kilometers forward, and slipped 2000 meters backward, still finding nothing.

Seeing this degree, even for the two of them, they lost confidence in finding traces at the scene. Liu Jinghui didn't need to worry himself, so he simply treated it as a walk, slowed his pace, and persuaded Jiang Yuan: "If you can't find it, don't look for it. So much time has passed, some traces might not even be left, let alone, robbery now doesn't necessarily mean fighting will happen."

"Zhang Xianyao's nasal bridge was broken." Jiang Yuan said.

"The nasal bridge was broken, but it doesn't necessarily mean he resisted. Kids now don't have the experience of fighting. If they don't know how to fight, it's possible they'll honestly give money after being punched a few times." Liu Jinghui said, shaking his head again: "The problem is, why rob a 17-year-old boy? The girls and old men and women who pass by are all richer and easier to rob."

Jiang Yuan smiled: "This returns to the initial theory."

When the two sides were at the initial case analysis meeting, it was this kind of discussion. Now that the branches and leaves have been removed, it has returned to the initial angle.

Liu Jinghui became interested, feeling that this kind of case discussion that can return to the origin is more to his taste.

After a little thought, Liu Jinghui said: "Actually, we have already hollowed out this case."

"Oh? How so?"

"We know the time period when the case occurred, basically it can be concentrated in one or two hours, right?"

"Looking at it from which angle to calculate, starting from the time Zhang Xianyao left school, to the time of death, this is the broadest time. If calculated for a long time, it's 8 hours. If it's until the mobile phone loses signal, 5 hours? If the previous section, the time Zhang Xianyao walked from school to the river, is calculated, the time can be shortened a bit."

"The time of death and the time the mobile phone lost signal are so far apart?"

"Soaking in the water for a long time, the judgment of the time of death is still very affected. It's better to calculate it broadly." Jiang Yuan didn't explain the reason. In fact, for the judgment of the time of death, for similar corpses, it is already very difficult to be accurate within half a day. To be more specific, it often requires the use of some special detection methods, such as pupils, etc., which are actually not necessarily very accurate, and still have to be placed relatively broadly.

Liu Jinghui nodded, then asked: "Then calculate according to the time the mobile phone lost signal. However, when Zhang Xianyao's mobile phone lost signal, it was near the school. If this can be explained..."

"Didn't you just say that the case has been hollowed out?" Jiang Yuan didn't let Liu Jinghui analyze further. There are too many reasons for the separation of the mobile phone and the person. Everyone had discussed it before. Even if Liu Jinghui gave a reasonable explanation, it couldn't include all subsets.

Liu Jinghui also smiled and shook his head, saying: "I'm drilling into a bull's horn again. Um, let's put it this way, we now know the approximate time of death of the deceased, and we also know the location of death of the deceased. Actually, we don't need to care about Zhang Xianyao's mobile phone. We just find all mobile phone users who appeared at the crime scene during this period and ask them once. There must be a murderer in here. Maybe there are eyewitnesses."

"If the murderer brought a mobile phone." Jiang Yuan's logic is also qualified, and what he said is indeed a possibility.

Just like the role of fingerprints was popularized to people in the 80s, and the role of DNA is also well known, mobile phones can be positioned. This is not news among ordinary people. It is not rare for those who want to rob, Changsha people, to prevent it.

"What you said also makes sense." Liu Jinghui changed his angle again after speaking: "However, if the murderer doesn't bring a mobile phone, the possibility of premeditated murder is very high. Just like what we said before, robbery, there is no need to rob a 17-year-old male. Zhang Xianyao is quite tall, almost 1.8 meters, right?"

"From this angle, it's correct." Jiang Yuan followed Liu Jinghui, walking along the river embankment for hundreds of meters like a walk, watching the green color around him change slightly, then woke up and said: "Indeed, if we screen once and don't screen out the suspect, then we have to suspect that the murderer has a grudge with Zhang Xianyao."

"Yes."

"Then the core problem is how to quickly and accurately screen these mobile phone users. This is a school. In a few hours, there are probably more than a thousand mobile phones connected to the base stations nearby. It is not realistic to record everyone's statement..."

"Robbers are likely to have a criminal record. If it's murder, just like what we just said, it might be someone they know, and there is always some grudge." Liu Jinghui summarized and said: "Ask and see what they say."

His plan is very pre-generation detective. In the era when there was no fingerprint identification, handling cases through statements was both a characteristic of the era and a last resort. Of course, there are still many people who handle cases "last resort" like this now.

"I think it can be corrected again. Sort the stay time of mobile phone signals at the scene. The longer they stay, the higher the ranking. The murderer continuously beat the victim. Even if it's Ip Man, hitting faster, it takes longer than the time of normal passing. If sorted, the murderer should theoretically be in front." Jiang Yuan synthesized the autopsy results slightly and immediately gave a usable idea.

Liu Jinghui nodded repeatedly: "This is good. The length of the scene is only 200 meters. It takes a few minutes to walk normally. Those who stay for a long time can also ask for the reason!"

"That's it. Um, the range of the drowning point can actually be reduced, but 200 meters is also fine. The two don't necessarily fight next to the drowning point. It's not strange to be 100 or 200 meters away..." Jiang Yuan also spoke easily, and added: "Just run through this idea first. If it doesn't work, you can completely increase the range around the drowning point by one level. Sort the stay time within 1000 meters and check the front ones. It doesn't necessarily take much effort."

"Sure, sure." Liu Jinghui felt that he and the dragon cooperated super well, feeling that the case had already been solved.

Jiang Yuan then picked up his mobile phone and started arranging for Wang Chuanxing.

Speaking of mobile phone signal base stations, Wang Chuanxing is much more professional than Jiang Yuan. As long as he said a little, he understood.

While Wang Chuanxing was taking notes in his notebook, he flattered: "It all depends on you, Team Leader Jiang, to determine the location where the victim fell into the water. In this way, the number of mobile phones passing by is limited..."

Jiang Yuan gave a few "Hmm, hmm"s, hung up the phone, and saw that Liu Jinghui in front had already walked to a pavilion and started buying milk tea.

"Let's eat some young people's things, come, come, come, I'll treat you today." Liu Jinghui was in a great mood, so he prepared to feed the dragon, and by the way, beckoned to Mu Zhiyang and Wen Ming behind him, calling them over to choose products.

The case had a clue, everyone's emotions were not bad, and they gathered inside with laughter.

At this time, I heard a male voice coming from opposite the pavilion: "Baby, I'm really not lying to you. We just helped beat him a few times that day, but look at it now, the police are here. I'll find a place to hide for a while, and come back when the wind passes. Otherwise, why don't you go with me?"

"Go where?" A female voice came.

"I don't know, go wherever. We'll take the train directly. Don't you want to go to Yungui to play? Let's play all the way there. However, if you want to play better, you have to save some money."

"How to save?"

"Doesn't your mother's shop often have a lot of money?"

"That's business money!"

"Oh, just take one day's business money, and tell her later. I'll also sell the electric scooter. Let's burn the boats!"

Hearing this, the four police officers present knew what the situation was.

Jiang Yuan's finger stretched forward, and it hooked with Mu Zhiyang's eyes.

Mu Zhiyang's eyes widened, he touched his gun with one hand, grabbed Jiang Yuan and pulled him behind him. Wen Ming behind him also silently pulled out his bowl-sized gun and pulled the safety without hesitation.

(End of chapter) ===== CHAPTER 1303 =====