Li Hong beckoned, and the detective who had just reported to him about the on-site investigation trotted over.

This person obviously knew Chen Yan: "Hello, Vice Captain Chen!"

Chen Yan saluted in return: "Hello."

"Wang Xu, re-introduce the situation of the on-site investigation just now."

Wang Xu nodded: "Yes, Captain!"

"The deceased, female, was around 20 years old, and the time of death was probably in the early hours of last night."

"At six o'clock this morning, the construction team went to work. The workers found the body and called the police."

"The deceased was suspected of being sexually assaulted..."

"The cause of death ... was initially determined to be mechanical asphyxiation."

"At the same time, the deceased was severely abused by the murderer before and after his death..."

In about three minutes, Wang Xu reported the general situation.

It seems to be a relatively common criminal case. There is a high probability that the deceased will be killed after being violated.

"Team Li, our two teams will jointly handle this case, what do you think?"

Li Hong nodded, of course there was no problem.

Although the crime scene is located at the junction of the two teams, if the case cannot be solved in the end, no one will be able to escape.

As for fighting for fame and fortune, hehe, it was played on TV and written in novels.

The real situation is that Li Hongba has no intention of participating, or even leading the case.

As long as he can solve the case, Li Hong doesn't care whether he has credit or not.

"Team Chen, I agree with your suggestion. The case will be jointly handled. You will lead the team and we will cooperate!"

When Li Hong finished speaking, a system prompt sounded in Chen Yan's ear.

【Ding! The task of the strongest police training system is released. 】

[Detection of playground murders, within a ten-day period, complete the task, reward skill fighting specialization, and cancel the task reward if you fail or exceed the time limit. 】

Chen Yan did not refuse. The most important thing at this time was to solve the case, not to be polite, not to mention that the system issued a task.

Fighting Specialization...

This skill should be good!

"Let's go to the scene to see."

……

Crime scene.

The East Yard playground of Liancheng Academy of Arts.

The cordon has been raised, and some detectives are really taking pictures.

A ** female body, face up to the sky.

Chen Yan turned on the visual and olfactory gene lock for the first time.

Then, Chen Yan knew why Wang Xu just said that the body had been severely abused.

The deceased was slender, about 1.7 meters.

She has a well-proportioned body and good proportions. Judging from her face shape, she should have been a beautiful woman before her death.

However, the original appearance is no longer visible.

The flesh and blood on the deceased's face were flying, and the knife-edges were all slashed into pieces, like a pile of rags.

One eyeball was shattered by a sharp object, and the other was bruised, which was the only intact part of the face.

The murderer should have avoided the one-eyed on purpose.

The body of the deceased, from the neck down, is also a knife-edge vertical and horizontal, tattered.

But the weapon used by the murderer should be a small knife. The knife edge is not deep, and it does not touch the internal organs. Although the knife mark is scary, it is not fatal.

And the underside of the body is also cut like a honeycomb, and has even been mashed.

The legs are slightly better. Although there are many knife marks, they are not completely broken.

Only the arms are intact, there are no knife marks, only some scratches.

The two younger policemen were already crouching on the side and retching.

The visual gene lock is turned on.

Every detail on the corpse was magnified in Chen Yan's mind.

"There are some incision wounds that are everted, obviously they were cut open by sharp objects..."

"There are more knife marks that are smooth and tidy, without eversion, apparently they were cut open after the death of the deceased..."

The scars on the corpse can actually speak.

The stab wounds on the living body are all everted because the muscles are active.

But after a person dies, the body's activity disappears, and the wound left in this case will not show eversion.

Apart from the arms, the neck of the deceased was also intact.

The faint pinch marks can already be seen.

However, in Chen Yan's line of sight, it seems that the two traces overlap.

One trace is bigger, and the other trace is smaller.

The smell at the scene is messy, and there are probably dozens of smells belonging to people.

Obviously, it is impossible to determine the murderer by virtue of this.

But in addition, there are three more special flavors.

Especially one of them made Chen Yan frown slightly.

"Nitroglycerin?"

How could there be a smell of nitroglycerin at the scene?

Although the smell was very mild, it made Chen Yan very vigilant.

You know, the biggest function of nitroglycerin is to make explosives.

Chen Yan only learned so much about this chemical after systematically rewarding his skills in firearms.

"Captain Li, the construction of the school playground...do you need to use explosives?"

Dynamite?

Li Hong shook his head: "The building of Liancheng Art Institute is an overall renovation. There is no need for blasting, so naturally no explosives will be used."

The crime scene was a fenced construction site.

Including a renovated teaching building, and most of the playground.

The body of the deceased was found on the playground below the renovated teaching building.

As for the other two scents, Chen Yan didn't care too much, they should be two perfume scents.

One is from the dead, the other is...

There were also quite a few female detectives present, probably because of their smell.

"Team Li," Chen Yan walked to Li Hong's side after the investigation was completed: "Since it is a joint case, then let's arrange the direction of the case?"

Li Hong nodded quickly. Of course, Chen Yan's crime-solving skills could be trusted: "Deputy Captain Chen, you can arrange it, and we'll do it for you!"

"Okay," Chen Yan nodded, "Then I won't be polite..."

"Li team, you arrange a group of people to contact the school to see if there are any missing students, extract the blood and fingerprints of the deceased, compare them in the identity information database, and try to confirm the identity of the deceased in the shortest time."

Judging from the age of the deceased wearing , there is a high probability that he was a student at Liancheng Art Academy.

"Send another group of people to take notes for the police."

"Zhao Bing, immediately complete the on-site investigation, quickly organize an autopsy, and determine the final cause of death of the deceased."

……

In Liancheng in early March, although it was still a little chilly, the winter was over and the weather was getting warmer.

Last night, even the city had its first spring rain.

After deploying the work, Chen Yan walked back to the scene again.

The crime scene is a construction site. The workers went to work in the morning. Although they did not touch the body, many traces around the scene have been destroyed.

However, from the details, Chen Yan can still make some unusual points.

The deceased had crawled on the ground for some distance before his death, and there were traces of crawling on the playground.

Although it is not clear due to the rain, the bloodstains mixed in the soil can still be found.

Chen Yan turned around and found the starting point where the deceased started to crawl.

About ten meters away.

Since it is crawling, it is naturally chest down.

However, the wounds on the deceased's body did not contain much dirt. It can be concluded that the deceased crawled to the last position before being tortured and killed by the murderer.

There are also signs of violations.

The deceased had signs of being violated before his death, which is obvious.

"Wang Gang, bring a group of people and call up all the surveillance cameras nearby to see if they can find anything."

assault... murder...

It seems to be a very simple case.

However, after the assault, why did the murderer abuse the deceased?

Torturing the deceased doesn't count, even after the deceased dies.

Chen Yan frowned, this doesn't quite fit the general characteristics of the Tsim Sha case...