On the Mi-171SH helicopter, Chen Shen condescendingly drove through the jungle below, and this time, their goal was extremely clear.

The reason is simple, the burning of nearly three tons of wet black powder produced a large amount of smoke, which quickly spread throughout the scope of the cave and completely filled the cave.

Then, the smoke escaped from the different exits of the cave, pointing out all possible escape paths for the Shadow Corps.

The scale of the cave is indeed not small, from the entrance to the farthest exit, the distance is close to 1 km.

However, judging by the smoke spread, the space inside the cave is not large.

This should be a typical dendritic cave under the dissolution of groundwater, not the flowing water cave that Chen Shen judged at the beginning.

The reasons for the formation of the two types of caves may sound similar, but in reality, they are very different in terms of internal space.

The former is a narrow, small reticulation structure, and there may be a small number of wide cave halls, but the scale of the cave hall is not too large; The latter is formed by the violent erosion of groundwater, and will be accompanied by a series of geological processes such as collapse and disintegration in the process, and the internal space is often vast, and even rivers, canyons, waterfalls and other landscapes will be formed.

The Shadow Corps were lucky to have chosen a cave that most closely resembled the "Tunnel".

However, they are also unlucky, because this kind of cave is too suitable for "stuffy voles".

The complex movement of air currents creates a subtle balance of air pressure in the cave, and once this balance is broken, the air flow carries air along the cave network to every corner.

——

Of course, it's not necessarily the air that brings it over, but also the smoke.

In addition, the walls of this kind of karst caves often have a dense stone stalactite structure formed by dissolution, which has poor adsorption of smoke, and even large particles of smoke and dust can fly and spread along the direction of the air flow, and the whole cave has almost no ability to weaken the "poisonous gas".

In this case, the scheme of "stuffy rats" proposed by the rats was a great success.

The moist black powder had not burned for half an hour before smoke was coming out from all corners.

Chen Shen decisively divided the Dongfeng Corps into three teams, one team of rope descent group, one team led by White Dog, and one team led by Lin He, and began to maneuver quickly in the forest and in the sky, rushing towards the places where the smoke was the thickest.

Looking at the column of smoke rising to the sky, Chen Shen said with a little emotion:

"It's really a stuffy vole this time. Do you think they have a chance to escape? ”

The mouse, who was also a member of the rappelling group, shook his head and shouted in reply:

"It's unlikely that they will escape, but even if they do, our goal has been achieved."

"As long as they appear in the jungle, the White Dog and Lin He can find their tracks, right?"

"That's right."

Chen Shen nodded slightly, while the mouse continued with a smile:

"Actually, I'd rather they suffocate inside!"

"They may not be able to find the exit, if they can't find the exit, then they will be stuck inside, and they will die!"

This sentence of the rat is not an exaggeration, as a southerner in his previous life, Chen Shen was too clear about the "suppressive power" of the smoke produced by this black powder.

Dozens of firecrackers were set off in the ancestral hall for the New Year, and half of the people in the small village were breathless.

If you're unfortunate enough to throw a firecracker into your room, you're just waiting to enjoy.

——

No, it can't be so vicious.

Because if you don't do it well, you will really die.

Chen Shen had seen the news before, saying that a family in a certain place in the south set off firecrackers in their own house, and finally suffocated the male owner to death.

Now, the situation faced by the Shadow Corps is actually similar

The thought flashed through his mind, and just then, the helicopter was hovering above the largest column of smoke.

Without hesitation, Chen Shen motioned for the mechanic to lower the rope, and then, the rope descended into three people, and they reached the exit almost synchronously.

The smoke was coming out one by one, and the Dongfeng Corps had already prepared their gas masks, and they approached with the thick smoke, but in fact, they didn't need to get closer, Chen Shen already knew that this was definitely one of the main exits.

Because, although the entrance of the cave is covered by a lot of vegetation, the air flow at the entrance of the cave is very large, which indicates that the tunnel should be relatively wide.

In addition, this exit is nearly 800 meters away from the entrance in a straight line, so it is quite suitable to choose as an evacuation point.

——

But this hole does not have any traces of "being stepped on".

Chen Shen carefully inspected his surroundings, although he was not as talented as Lin He, but under the inspection of his professional eye, he finally determined that this cave had indeed not been used.

Of course, just because they haven't used it doesn't mean they won't be used, all they have to do is wait at the hole to see if the rats will come out.

So, the three people looked for cover on the spot and raised their guns to block the hole.

Time passed minute by minute, and Chen Shen had almost lost his patience, but at this time, there was a gunshot in the distance.

Then, the voice of the other two people in the rope descent group came from his headphones.

"Detachment 2, I got it here, 4 people! Already killed! ”

"Beautiful! We're moving faster than them! ”

Chen Shen perked up, and before he could praise more, there was also good news from Lin He's side.

"Two groups killed two, they should have been separated!"

2+4, 6 people are gone.

There were only 12 surviving personnel left in the Shadow Corps, and this time, it was halved again.

Chen Shen breathed a sigh of relief, he knew that the battle was almost over.

So, he opened his mouth and ordered:

"Keep crouching and checking!"

"Understood, no anomalies were found in group 1!"

"No anomalies found in the 3 groups, continue to the next checkpoint!"

The operation to "plug the rat hole" continued in an orderly manner, and after an hour and a half, all the black powder finally burned out.

Chen Shen did not immediately organize people to enter the cave, but first tied ropes, tentatively entered one or two hundred meters, and confirmed that there was no problem with the air quality, and then gradually went deeper.

After all, gas masks are not a panacea, everything is still based on caution.

And after actually entering the cave, Chen Shen also successfully verified his conjecture.

This is indeed a dendritic cave, and the tunnel is very narrow, not to mention that some places bend down to pass, and even in a small part of the area can only crawl forward.

At the beginning of the narrowest section of the passage, Chen Shen saw the first corpse.

A corpse that died of suffocation.

Following the traces of this corpse, the Dongfeng Corps smoothly entered the interior of the cave, and when they finally crossed the narrow tunnel and entered the first cave hall, a scene that made Chen Shen a little creepy appeared.

There were 5 corpses lying in the cave hall.

Three of the bodies were shot and died, and the other two were typical of asphyxiation.

The most bizarre thing is that the corpse in the middle with a serious chest wound still has a weird smile on its face.

When Chen Shen's flashlight swept towards him, even a staunch atheist felt a sense of horror as his hairs stood on end.

He had no idea what was going on.

He didn't know why the three men were killed, or why they were suffocating.

But he knew that these members of the Shadow Corps who stayed here must have suffered greatly before they died.

Not just physically, but also. Spiritual.

It is also not known whether their commander will regret his decision to "enter the cave".

——

But he didn't have anything to regret, because it was really the only viable strategy they had and the only chance to survive.

It's just that they didn't expect their opponents to be so unmartial arts

Stuffy voles.

Chen Shen couldn't help but be a little funny.

Who the hell could have imagined that?

Confirming that the number of people was correct, Chen Shen breathed a long sigh of relief.

The Shadow Corps is gone.

This time, it's really gone.

However, he always felt that something was not right, and after thinking about it for a long time, he finally thought of it.

He glanced at the gun in his hand and said to the white dog who was examining the corpse:

"I've found a problem."

"I didn't fire a shot at the Shadow Corps this time."

"I'm going to open it."

The white dog stood up and asked tentatively:

"Why don't you shoot?"

Chen Shen hesitated for a moment, and finally raised the SCAR in his hand, aimed it at the man who was sitting on the ground with a chest injury, and pulled the trigger without hesitation.

"Bang!"

The man's face exploded, Chen Shen breathed a long sigh of relief, and the strange feeling in his heart vanished.

He opened his mouth and said:

"It's all dead, and you're still laughing at your mother."

(End of chapter)