Chapter 578： no clue

There are only two exits in this school, and students and vehicles can only enter and exit through these two gates.

As for the surrounding walls, because of the installation of electric fences, it is impossible to be overturned.

Both gates have high-definition surveillance cameras, and it is recorded in the file that no missing students were found.

A living person can be said to have disappeared out of thin air. Of course it is impossible to disappear out of thin air, this is not magic.

The problem is likely to occur on the 100-meter road section that is not monitored.

Half an hour later, Chen Yan studied the file carefully, and asked Li Yun some details about the process of handling the case.

After thinking for a while, Chen Yan stood up: "From the file, there is indeed nothing wrong with it. This person seems to have disappeared out of thin air."

"Well, let me go and have a look at the scene."

go to the scene?

Li Yun's face brightened, and he also hurriedly got up: "That's great, it will be easy to handle with you!"

After tidying up the files on Chen Yan's desk, Li Yun pushed open the office door first.

"Captain Chen, please!"

After half an hour of smoking.

Liancheng Vocational and Technical College.

In early September, Liancheng Vocational and Technical College has just started for a month in autumn. Old students graduate in June, and new students enter in late August. This is the busiest time of the year.

The school's new military training has just ended a few days ago.

The disappearance of a student, at the beginning, only had some repercussions among the people around the student.

However, three days have passed, and there is no trace of the missing student. Some media have noticed this incident and started publicizing it.

"The missing student is called Chen Ziqiang. He is a second-year student in the hairdressing class. He will graduate in one year."

Unlike the general four-year university system, most vocational technical colleges have a two-year or three-year school system, and the length of study varies according to the major.

Chen Ziqiang majored in beauty and hairdressing, specializing in hairdressing, and he had to study in school for three years.

Chen Yan and Li Yun first came to the teaching building where Chen Ziqiang was in class.

"At 10:20 a.m. three days ago, the surveillance record at the entrance of the building showed that Chen Ziqiang walked out of the teaching building."

At the entrance of the teaching building, Li Yun was telling Chen Yan about the situation that day.

Facing the teaching building, Li Yun pointed to the left hand side: "On that day, Chen Ziqiang turned right after leaving the door, followed the path on the edge of the teaching building, walked through the grove, and returned to the dormitory."

"We have checked the monitoring, and this path is the only way for all the students in this teaching building to go to and from the dormitory and the teaching building."

"Chen Ziqiang used to take this path to and from the dormitory and the teaching building."

While talking, Li Yun led Chen Yan past the teaching building and walked up the path. After about 300 meters, they came out of the small forest.

Li Yun raised his finger and pointed to a monitor on the side of the road: "That day, this monitor saw Chen Ziqiang walking towards the dormitory after he came out of the small path."

"And 50 meters past the camera is the laboratory building. There is no monitoring for about 100 meters from this distance."

"Chen Ziqiang disappeared within this distance, and has never appeared on any surveillance cameras since then."

Chen Yan raised his head, looked at the surveillance camera above his head, and then looked about 100 meters ahead, there was also a surveillance camera.

It's just that one of the two surveillance cameras is facing the left and the other is facing the right. The back-to-back approach makes the 100 meters between the two cameras a vacuum zone, and next to this vacuum zone is the laboratory building that Li Yun mentioned.

Look around, there are woods on both sides of the road.

"Is it possible for Chen Ziqiang to pass through the woods on both sides?"

Li Yun shook his head: "It's unlikely."

"The woods on both sides are not very wide, and there are cameras monitoring after leaving the woods, but Chen Ziqiang was not seen at that time."

"It is unlikely that Chen Ziqiang walked through the grove to avoid surveillance, because the grove is watered every day from 10:00 am to 1:00 pm."

"The amount of water is relatively large, and it is inconvenient to walk in the woods, and even if Chen Ziqiang really walked through, it would leave his feet behind.

print. "

"But we have carefully checked the groves on both sides, and there are no footprints, which means that the students here rarely walk through the groves."

The surveillance video on the road did not capture Chen Ziqiang's figure, and there were surveillance cameras passing through the grove, but Chen Ziqiang was not captured either, and the grove was impassable, with no trace of pedestrians passing by.

Chen Yan looked at the laboratory building on the right: "Then the only possibility for Chen Ziqiang to enter this laboratory building?"

Li Yun nodded affirmatively: "We also thought so at the time, and there is a side door on the side of the building near the road, which is opened all year round without camera monitoring."

"We suspect that Chen Ziqiang must have entered this laboratory building that day in order to disappear from all the surveillance cameras."

"After making this judgment, we arranged for detectives to conduct a blanket search of the laboratory building, but found nothing."

The two walked to the side door of the laboratory building while talking.

"We suspect that the other party borrowed a way from the laboratory building, and then left the laboratory building through other exits."

"But there are only three exits in this laboratory building, which are the side entrances on both sides of the building and the main entrance in the middle."

"The side door on this side, which is open all year round, is close to the road for students to enter and exit, while the other side door is already close to the wall and is locked."

"So, after Chen Ziqiang enters the laboratory building through this side entrance, he should come out through the main entrance."

"But there is also a surveillance video at the entrance of the main entrance of the laboratory building. If Chen Ziqiang comes out from the main entrance, there will be traces. But we checked the surveillance at the main entrance of the laboratory building and found no Chen Ziqiang."

"However, if Chen Ziqiang didn't walk out of the laboratory building through the main entrance, then he must have walked out of the laboratory building through this side entrance. In this case, he returned to the position 100 meters between the two cameras, and he still has no place to go."

dead end.

All scouting came to this place and it became a dead end.

It can be said that Chen Ziqiang disappeared from this place.

Chen Yan nodded, and led Li Yun around the laboratory building.

As Li Yun said, there are only three exits from the laboratory building, and the other side door has been locked all the year round, and the lock is already rusted. Only the main entrance and the side door adjacent to the road are open, and there is a camera above the main entrance. .

However, after turning around, Chen Yan also discovered a problem.

"The windows on the first floor of the experimental building can be opened, and there are no guardrails. Is it possible that Chen Ziqiang left the experimental building through the window?"

"at this point…"

Li Yun and the others really didn't pay attention to this.

"I'll send someone to check the windows on the first floor to see if there are any traces of trampling."

"But Team Chen, even if Chen Ziqiang really left through the window, there is no open space behind the laboratory building. It is a small forest. Because the irrigated soil was slippery that day, we are sure that no one's footprints were left behind."

"As for the small square in front of the laboratory building, there is also a video at the exit. Even if Chen Ziqiang goes out from the window of this building, he will not disappear without a trace."

What Li Yun said makes sense.

If Chen Ziqiang wanted to skip class, there would be no need for such trouble.

He didn't need to hide from surveillance.

Moreover, as Li Yun said, even if he left the laboratory building through the window on the first floor of the laboratory building, he could not avoid the monitoring at the exit of the small square.

It can be said that Chen Ziqiang actually disappeared from a closed experimental corner.

This gave Chen Yan a bad feeling.