At night, Jinshan is like a steamed bun caught by a black hand. The light lit up is like the black green caught by the steamed bun. It is a bit brighter and not bright enough, similar to a matte feeling.

The road at the foot of Jinshan has been renovated several times. If you observe carefully, you can also see some shadows of the old road, especially several places where you cut bends and straighten them, which looks suitable for ambushing.

Jiang Yuan asked someone to find an electric car to come over, rode it for a while and got off to take a look, and asked Wang Chuanxing to make records from time to time.

Liu Jinghui rode another electric bike and followed behind, yawning so much that he was sleepy. Cui Qishan, who was beside the pussy, paid attention from time to time, for fear that he would fall asleep like this.

Another big bend, Jiang Yuan stopped the car and shone it with a flashlight. He saw that there was garbage like clothes stuffed in the drainage ditch next to the driveway.

The technician of the Criminal Department, who accompanied him, hurried forward and pulled the garbage up with a hook, but it was a few dirty plastic bags.

"It shouldn't be." Jiang Yuan waved his hand and gave up.

This is a situation that criminal police often encounter when they go to the scene. The crime scene envisioned by ordinary people is a state of collecting all the evidence of everything, and in reality, only the evidence that looks the most like the evidence will be collected.

Therefore, it is not that the criminal who has not been caught in ordinary cases has not been misunderstood for hundreds of secrets. He may have missed thirty or forty items, but for various reasons, the criminal policeman's comb did not comb him.

Some criminals just wandered around, thinking that they had mastered some great criminal skills, so they repeated the crime, escalated the crime and provoked the police. At this time, the police combs would suddenly become dense, and criminals who were not particularly lucky would basically fall into it.

Therefore, why can some cases return to the first case and find relevant evidence? Just saying that the criminal police in the first case is irresponsible and not complete, the criminal's casting has risen and the task force has increased, which means that the comb has become denser.

However, even the task force organized by Jiang Yuan now cannot throw all garbage into the laboratory. The evidence is endless. If you take the garbage bag back, you can dissolve water for liquid phase analysis, cut it into pieces for 100 groups of liquid phase analysis, and you can also dip it in cotton swabs to make traces, but useless things will be useless after all.

Jiang Yuan crossed the drainage ditches and walked into the bay. A larger buffer belt was built here. Whether you were driving or riding a bicycle, you could only see the curves, and the depths of the buffer belt were invisible. If you were hiding, this was a good waiting place.

Two criminal technicians raised the headlights on the spot and illuminated the buffer belt clearly.

Jiang Yuan looked at the ground carefully.

This is a flat ground, but the ground is soft and there is dust accumulation. If it has not been specially cleaned, you can see the footprints.

If it only took a week to clean it up, Jiang Yuan could see his footprints with his ability.

"Is there any?" Liu Jinghui got out of the car and walked a few steps. He felt much more awake and only said halfway through his words. He felt that his dragon should be able to understand.

Jiang Yuan straightened his waist and said, "There are footprints, but in terms of time, it doesn't fit well. It's the old footprints. Take it."

Jiang Yuan waved and called someone to come and took a few footprints that were almost buried by the dust.

"Not here?" Liu Jinghui asked.

"It shouldn't be." Jiang Yuan shook his head.

Liu Jinghui pondered for a few seconds and said, "You are scanning the traces of the scene now, which is actually based on an idea: the victim comes out of the subway station, rides a shared bicycle, encounters something or someone, and then disappears. If the case is not carried out according to your idea, you will not be able to find the traces at the scene. In fact, even if it follows your idea, you may not be able to find the scene, right?"

"Yeah." Jiang Yuan admitted. Assuming it was a simple collision, there was not even a car crash. If someone drove on the side of the road, stopped the victim, then tricked him into the car, or got caught in the car, it would be difficult to find clues in this way.

Seeing Jiang Yuan’s approval, Liu Jinghui immediately started to get up and continued to analyze: “It may be more effective to find a means of transportation than to investigate this uncertain scene. If the victim disappeared, unless he ran away by himself, the criminal would have to have a car or something to take her away.”

Xiao Si was listening from behind, and a flash of inspiration flashed: "Putting makeup?"

"Also..." Liu Jinghui sighed: "It's possible, but it's too outrageous."

"There are too many vehicles." Jiang Yuan naturally thought of this plan. In fact, they had not solved the case by checking the car before.

However, checking a car often requires the vehicle checkpoint to cooperate. That is, a car will come over and the surveillance will take a photo. Moreover, after a specially designed road, it is necessary to cooperate with the surveillance, so that the appropriate light source can be maintained throughout the day, ensuring that the entire car can be photographed, and the license plate and the driver and the passenger's faces are clearly captured.

Without a vehicle checkpoint, the workload of checking a car is 100 times more, and it is easy to leak and difficult to take pictures clearly. It is even more difficult to take pictures of the driver and co-pilot's faces clearly. The high-definition monitoring is impossible to be higher than the photos of the checkpoint, and the storage volume is not at the same level.

Jinshan is located in the capital city, and you can definitely find a vehicle checkpoint if you want to find a vehicle checkpoint, but as the distance is far, there will be more vehicles coming in. Most of them may not be vehicles passing through the scene, which increases a lot of ineffective labor. Of course, even so, using a vehicle checkpoint in the distance to check cars is less work than finding a few high-definition cameras to check cars.

Finally, no matter which solution, the workload is too high. The vehicle checkpoints are placed on the main road, and the traffic flow in the capital is so high... If you just check a license plate or something, it will be a matter of minutes, but you can search aimlessly, and this is an endless task.

Liu Jinghui didn't say it casually. He thought, "That's what I think. Look, no matter what the suspect thinks and what the purpose is, the time he stays in this area may be unusually long."

When Liu Jinghui started to think, there was still light on his face - the survey light next to him was still on - he said with his fingers: "The victim rode a bicycle from the subway station, passed through the nearby streets, and there was an industrial and commercial enterprise, then entered the mountain, and finally reached the gate of Jinshan. It was about four kilometers in total. We can ride a bicycle normally and it takes twenty or thirty minutes. If the vehicle is, how long can we run this section?"

Liu Jinghui said and made a judgment: "Normally, I want to say that a car runs for such a distance, 5 minutes is enough. Of course, we have to pinch the vehicle checkpoint. We are not sure where they are going in the middle. Let's focus on the passing time. The backend software should be able to calculate it directly. List the time-out vehicles and count them as suspicion. How about it?"

"There are no checkpoints at the subway station, and there are no checkpoints at Jinshan. We can only look for them from the front and back. Here, passing cars are the easiest to be screened out, but some cars go to Jinshan to play, some cars belong to employees of the company in the middle, and so many local residents, residents of various communities and self-built houses. Their cars may stop when they come in..."

"Take the data of the parking lot in front of Jinshan and sifte it. If the local residents... Actually, don't say it, these residents are really suspicious..." Liu Jinghui said and stopped.

Theft cases are often easily carried out in faraway places, but murders are not necessarily the case. From the subway to Jinshan, several forks enter, and there are rows of buildings inside.

Although the occupancy rate here is not high and many houses may be empty, there are still many people living there. Moreover, because there are subway stations and the cheapness of the remote suburbs, some residential buildings are rented in groups. In this way, there are many people living within these kilometers.

If the criminal lived in this section, he would commit the crime in this section, and then drove home from a fork in the road, and all the previous investigations were lost.

"Let's talk about it when the dog comes." Jiang Yuan shook his head and said again: "Continue to watch the scene."
Chapter completed!