The metal exhaust hood of the air conditioner on the ceiling was slowly pushed away.

This thing has to be pushed up because it's stuck on the card slot.

Twenty-five centimeters of the exhaust port was opened, and Xiao Yu, who was stepping on the ladder, reached into his head and took a look.

The expression changed.

Inside was a pitch-black metal ventilation duct.

It was not as twenty-five centimeters as Xiao Yu imagined.

Instead... Fifty centimeters!

The entire ventilation duct, only the 'elbow' is reduced, and the place connecting the indoor ceiling is twenty-five centimeters.

"How's it going?"

Wu Jia, who was holding the ladder below, asked.

"It's here!" Xiao Yu opened his mouth in a deep voice.

"Yikes!"

Wu Jia below exploded a foul mouth.

Finding clues doesn't mean it's a happy thing.

It also represents an IQ insulted by criminals.

Sometimes case leads are like that.

The more you think that something is impossible, it happens in this impossible.

With his hands reaching into the ventilation ducts, Xiao Yu climbed in.

People who understand central air conditioning know.

The erection of this air conditioner requires an air conditioning host.

It is usually installed on the roof of the building.

Use the main engine to send air, enter the main pipe inside the building, divert the wind from the main pipe, and send it into one room after another through some auxiliary pipes...

The swag warehouse is an old building, erected with the kind of old-fashioned tin ventilation ducts, hoisted by fine steel bars.

Fifty centimeters of ventilated tin ventilation ducts, bearing the weight of an adult is completely no problem.

Crawling slowly, Xiao Yu didn't care if the clothes would be dirty.

Not to mention that 'someone' has already climbed through this pipe and has already 'cleaned' the dust of the past once.

Until he climbed to the fourth floor of the main entrance, Xiao Yu went down to the third floor...

Finally, the place where Xiao Yu appeared was a utility room on the first floor.

After making a phone call, Wu Jia rushed in, staring at the air conditioner in the ceiling, his face gloomy.

The internal clues of the swag library and how the other party entered, combed out.

Look up the outside...

"It's here."

Xiao Yu's eyes stared at the window of the utility room.

It should be from here.

Open the window and outside is the back of the swag building.

Three meters away, there is a wall with a height of four meters.

"Climb the wall and come in?"

Wu Jia, who was now confused, shook his head and said to himself, "No, there are heavenly eyes outside, if they climb the wall, they will definitely be seen." "

"No."

Shaking his head, his arm was on the edge of the window, Xiao Yu's figure was like a light and agile tanuki cat, jumped outside, looked around, and his eyes fell on a sewage manhole cover on the ground, "Enter from the ground!" "

In the past, he investigated too many criminals using the city's underground sewage network channels to commit crimes.

Who would have thought that such urban drainage buildings could be used by criminals?

And this urban drainage network is accessible in all directions, covering almost the entire city.

Not a specific region.

Some criminals take advantage of these drainage networks, all of which can be accessed.

Because normal people wouldn't even think about it.

Someone would commit a crime in this dirty and foul-smelling underground pipe...

"I'll come."

After taking out a pair of latex gloves from the pocket of his clothes and putting them on, Wu Jia smiled and said to Xiao Yu, "I can't always let you contribute." "

"Okay."

Watching Wu Jia lift the sewage manhole cover and enter the ground, Xiao Yu smiled and shook his head.

This man can be treated, there is dirty work and tired work really!

An hour later.

Six hundred meters away from the stolen goods storehouse, a sewage well outside a residential building, Wu Jia, who was covered in stains and a foul smell, sat on the DaoYazi, took the cigarette handed by Xiao Yu, squinted his eyes with a comfortable face, and smoked a cigarette, "Special, it's really good smoke!" "

Xiao Yu didn't give a crap either and handed the cigarette case to Wu Jia.

"Sure enough, it's boss level."

Happily putting away the cigarette box, Wu Jia sighed.

"Fart boss!" Xiao Yu smiled and shook his head.

Are we the boss too?

Don't make a fuss, it's a little cop!

Putting away the laughter, Xiao Yu took out his mobile phone.

"High up, put the S City XX District, XX Residential Building Street Sky Eye Monitoring, call it out!"

......

Half an hour later.

A police car arrives.

Gao Shengli, director of the Serious Crimes Division, came to Xiao Yu and Wu Jia and handed them a tablet.

Click on the surveillance video, fast forward, on the eve of the crime...

Morning.

A commercial vehicle without a license plate appears in the view of surveillance video.

Two men came down from the car.

The appearance is not clear because he is wearing a mask and a hat.

A man is about one meter eight tall.

The other man was tall, between 1.75 and 1.77.

Neither of them was that strong type.

They took one out of the car... Tent.

Assembled and covered with sewage manhole covers.

Two barricade signs were also taken from the car and placed on either side of the tent.

The barricade sign reads three words, under construction.

Then the two of them walked into the tent...

It wasn't until about four o'clock in the afternoon that the two men walked out of the tent again.

Retract the tent, retract the barricade sign, get in the car and walk away...

"It's them!"

The gaze retracted from the tablet, Xiao Yu said coldly.

Both Wu Jia and Gao Shengli had cold faces and cold eyes.

"It should be a planned crime."

Xiao Yu continued: "First of all, it can be confirmed that it is a Chinese person, the skin color and eye color, and the shape of the face can be roughly seen. "

"Secondly, they are familiar with the city's sewage network and are familiar with the air conditioning pipes inside the swag storehouse. It can be inferred that they should have two copies in their hands... Sketch. "

"When committing a crime, there must be a rough plan. Like time, like the timing of hands,and one thing... In the past, some time period. They must have been to the swag storehouse, surveyed the air conditioning ventilation ducts, and could not have acted rashly. "

Speaking of this, Xiao Yu looked at Gao Shengli, "High, check whether there are air conditioning pipes repaired in the swag warehouse some time ago, or clean up the pipes or something, and whether there are any outsiders who have entered." "

"Hmmm!" Gao Victory nodded.

"Brother Wu."

Xiao Yu looked at Wu Jia, "You go to the road management and protection unit to check to see if anyone has been to them some time ago and checked the city sewage drawings." "

"Okay." Wu Jia nodded.

When the two left, Xiao Yu returned to the stolen goods storehouse.

Standing at the scene of the crime, looking at the two beaches on the ground that had turned black and purple.

Two sacrificial brothers, you first watch from heaven.

Rest assured, none of these beasts can run!

Thank you for reading this story at novelsemperor.com. Your support enables us to keep the site running!