Although there are still many things that the people above don't understand, they still do what Lin Song said. This time, the local police have encountered a challenge, and to be honest, they have never seen anyone who made such a request.

Seeing that the police had cooperated in blocking the manhole covers in several nearby neighborhoods, Qian Donglu finally couldn't help but ask Lin Song: "I don't understand, what's the use of pressing the manhole covers now?" Since the other party entered from the outside, then they must have an exit to get out? ”

Lin Song took out a computer next to him and opened the underground pipe network diagram that Zhao Xuelin found before: "Take a look at it yourself, the manhole cover here is with a self-locking device."

This self-locking device has an access mode, which means that it can be opened from one side from the outside, just like opening the door, but after entering, it cannot come out from the inside.

Some people think that this design will pose a danger to the workers working in the pipeline, so it can be said that it is rare in China, but the border city is an exception.

After all, the border city is close to the border, and there are many smugglers and drug traffickers. The underground network network is also a point they are eyeing at the same time.

In order to plug this gap, this manhole cover with an internal self-locking device is used.

Let's assume now that we are the ones who stole the rough stones, and when we carry the excavation equipment and enter the pipes, of course we have to find a way to close the door of the manhole cover in order to hide our eyes.

After they succeeded, they didn't even forget to refill a hole below, which took a lot of time. I've calculated that the time from the time the original was stolen to the present is just enough for them to backfill the hole. That is, they are not leaving yet! ”

Hearing Lin Song say this, everyone understood Lin Song's intentions, and Zhao Dongfeng frowned: "Then will they leave directly from the underground and come up after walking to other blocks?" ”

"It's impossible." Lin Song said: "Look for yourself, here is the blocking filter of the underground manhole pipe network, that is, in the underground sewage pipe, there will be a blocking point every other distance.

The significance of the existence of this barrage point itself is to block the special-shaped waste and facilitate the dredging of the municipal department. so as not to cause port pollution and congestion.

But now, this blocking point has invisibly become a level for them, and it is not easy for them to pass this level. At least we still have a chance to find a way to intercept them. ”

Hearing Lin Song say this, these warriors suddenly became excited: "That means that we still have a chance to recapture the original stone now?" ”

Lin Song said directly: "Everyone, listen, I'll start arranging combat missions now!" ”

This time, whether it was Zhao Xuelin or Zhao Dongfeng, they all stood up straight, waiting for Lin Song to assign tasks.

"Zhao Dongfeng, you lead your South China Tiger battle team and continue to hold on to their positions. If the other party is forced by us, it is very likely that they will try to return the same way, and then take the opportunity to kidnap Chen Tianhao in order to break out of the encirclement, so you will directly ambush here and set up an encirclement to wait for the other party to come in and jump.

Xuelin, you take the action group, together with the snow wolf team, we are now divided into four tactical groups, and go underground from the four corners around here. Search towards the central area. Lin Song said.

Zhao Xuelin and Zhao Dongfeng nodded one after another, and at this time, Lin Song looked at Chen Tianhao and said, "Mr. Chen, please notify the local police and the municipal department, and ask them to hurry up and block the surrounding sewage pipes, and separate our search area from other places as much as possible." ’

Chen Tianhao didn't quite understand why Lin Song did this, but he still nodded resolutely: "I understand." ”

Lin Song smiled indifferently, and said in a somewhat heavy voice: "This matter is very important. As you all know, what is lost now is not a fake, it is a genuine rough stone, and you all know very well what is inside the rough stone.

After a while, we wore anti-chemical equipment and exchanged fire with each other below the ground, which would inevitably cause damage, and I didn't want the ancient viruses in the rough stone to follow the sewage pipe network and plague the entire border city. ”

Hearing Lin Song say this, everyone suddenly realized, Chen Tianhao nodded resolutely: "I understand, Team Leader Lin, don't worry, I will definitely ask the police and municipal departments to block the surrounding area." Never let the ancient germs in the rough stone spread to the outer areas. ”

Lin Song nodded: "Okay, everyone, let's go!" ”

Within ten minutes, all the teams were already in place, and Lin Song and Zhao Hu were in a team of two, responsible for searching from the northeast corner towards the central area.

After opening the manhole cover, everyone put on the anti-chemical equipment and entered the sewer one after another. Many people have criticized it before, generally speaking, the diameter of the city's main sewage pipe is often about a few meters. But in Huaxia, it's basically about one or two meters.

It is precisely because of this aspect of the complaint, over the years, the urban sewage system in China has also undergone great changes, and now the underground sewage pipe network extends in all directions, almost comparable to an underground city.

Chen Tianhao: The area where they live is a densely populated area, and the pipe network in this area will be relatively complicated. Some places are spacious, while others are narrow, and it is definitely not an exaggeration to get lost in them if you rush into them without a guide or even a pipe network diagram.

Lin Song and Zhao Hu, according to the direction shown on the map, slowly searched ahead, and after walking not far, Zhao Hu complained: "Boss, you said that if the snow wolf is here now, its nose will definitely be able to smell the other party's location." ”

Lin Song held the gun, his eyes searched forward, and he said without looking back: "Snow wolf? The snow wolf is not omnipotent, the snow wolf also has its weaknesses, not to mention anything else, it is the sky-high smell in the sewer, and the snow wolf can't stand it.

The sense of smell is extremely sensitive, and sometimes it is also one of the weaknesses of the snow wolf, that is, it is easy to be misled and confused, and I let the snow wolf stay on the ground to assist Zhao Dongfeng for my reasons. ”

The two of them searched forward as they spoke, and it didn't take long for them to hear a burst of gunfire in front of them, and Lin Song hurriedly turned to the communicator: "Who shot it!" Who shot! ”

"Not us!" Qian Donglu said: "Zhang Feiyu's team and I did not shoot. ”

"It's not us." Zhao Xuelin said: "My own combat group did not encounter the enemy. ”

"It's not us, either." The warrior named Fang Zi said, "We don't even see the shadow of the enemy. ”