Xue Lang's speed was terrifying, but he knew it.

Because, the wind force reached by the exhaust fan is judged to be more than six levels, and the speed of thirty or forty meters per second, even if the channel is a little longer, the diversion leads to a decrease in wind pressure and slows down, or there is a small diversion exhaust fan, which cannot be stopped by twenty meters in one second, and it is no problem to reach the deepest layer in five seconds.

And the time he delayed on it reached a minute away, enough for ylang-ylang to blow all over the corner. The only question is whether the concentration can reach the level of full equilibrium and make people sleepy.

Running down the steps, just about to turn the corner, he paused suddenly, slammed into the corner, the muzzle of the gun poked out, and without hesitation pulled the trigger.

Puff, puff, three shots, a puff of blood mist instantly rose inside, and a thick bloody gas followed.

In sight, the two guys were lying in the chairs, both with a bloody hole in their foreheads, and blood was dripping down. In the back, the half-pulled skull was lifted off, and the red and white objects sprayed on the stone wall behind it.

Call......

Xue Lang exhaled a breath of turbidity, one of the two staring at the computer screen, the other guarding a sniper rifle, and the front of the muzzle seemed to be an open firing port.

Next to it, there is also a firing port, although it is closed, but behind it is a heavy machine gun,

On the screen, it is the open area directly in front of it. It is conceivable that once these two firing ports leak out of the fangs, no number of people will be enough to fill them.

Looking inside, Xue Lang gasped.

Inside, the space is a little larger, and there is actually a small surface-to-air missile launcher with multiple warheads, which obviously has air defense capabilities for air interception.

Oh yes! Military fortresses!

After Xue Lang confirmed that there was no one inside, he cursed in his heart, turned around and left.

He had to find the map of the defenses, and the two of them had just keenly captured that they were breathing very smoothly, not like they were asleep, maybe it was too far away from the vents, or maybe the front shooting port had wind coming in, causing them to not inhale enough and fall asleep.

Running to the next corner, Xue Lang saw the portal in the passage.

At the corner, there were also two people on duty, who were also not completely asleep, and they felt that they were half-asleep and half-awake, and their breathing was not very weak.

Xue Lang flashed silently, killed the two of them with two shots, and saw that the situation was the same as the previous one, so he turned around and went straight to the portal, swiped the card to open it, and a strong aroma came to his face, and his heart was settled.

If you smell the scent, it's not a big problem.

Then, he saw sleeping figures lying upside down all over the room.

He didn't bother to look closely, and rushed to a computer in a few steps to quickly see which one would be defense-related.

Soon, he found the defense computer, a special computer in a separate small room, apparently the leader's class.

After reading it carefully, Xue Lang gasped.

Here, it is impossible to use ylang-ylang to control it all, the defense channel is divided into three layers, and the first layer above is the one where you are, all the way to the ground, there are two layers, and the rest is internal defense.

All three layers of defense lead to the valley entrance into the mountain, in one direction, and the upper two layers are equipped with long-range observation means to observe the situation on the bare mountain above the treetops.

What made Xue Lang nervous was nothing else, these passages were one-way, but they were not connected to the ventilation system, they were all ventilators dug in the mountain to ensure ventilation in the passages, and there was a position for turning defense.

In other words, in the three passages, the defenders inside will not be controlled by ylang-ylang, and must be artificially removed.

After reading it, he didn't think much about it, took out the magnetic card in the pocket of the sleeping guy lying on the chair, quickly blocked the passage door of the diversion on both sides, and quickly went straight to the next floor.

Sure enough, the continuous staircase bends were all defended, but fortunately, this was an internal raid, and the people around the corner didn't know that the killing god was coming, although they didn't fall asleep, they didn't block Xue Lang's attack.

On two floors in a row, Xue Lang saw the figure in the passage upside down, and it was in a crowded position.

Xue Lang didn't dare to delay, although it only took about a minute just now, he knew that once he was exposed, the defenders returning from all sides would bring him devastating trouble.

The bullet doesn't have a long eye, he must take this base in a short time!

Glancing at the few figures who fell to the ground on the passage, Xue Lang hurried to the last corner where he had just shot the two defenders, found a way to open the firing port, carefully opened the firing port, turned on the headset, and tried to make contact.

Fortunately, he could almost poke his head out of the mountain, and as soon as the signal was opened, he ordered: "Everyone listen to the order, return to the position where the initial stay is on guard, move to the northeast peak, move halfway up the mountain, find the mark and rope left on the tree at the bottom, three lengths, silently break into the base, and do not approach the valley mouth!" ”

"Yes!"

A tiger roar came from the headset, and then, Xue Lang heard a chaotic sound.

Xue Lang didn't bother to specify the location in detail, closed the firing port, jumped up, and went straight to the upper floor.

There should still be guards at the upper vents, which must be taken down as soon as possible.

Dozens of meters larger, for him, even if he goes upstairs, it is a speed of 100 meters, and he rushed into the first room in a few breaths, followed by sticking to the damaged door and listening, confirmed that there was no movement, quickly connected the power supply, swiped the card to open the door, and quietly touched the front.

Sure enough, he judged correctly, when he turned the corner, there were actually three people stationed inside, but they were not in front of the screen. Looking at the screen again, one direction is staring at the stone wall of the vent, one is staring directly below, and the other is staring at the other side.

If it weren't for the fact that the position of the descendant was a little bit angled, and his speed was fast enough, he would have been discovered if he couldn't keep it.

Glancing at the almost invisible rope, Xue Lang secretly took chances.

The three people didn't sit in front of the screen, probably not worried that someone would sneak in here, so they didn't find out about their arrival.

Seeing the three people here, plus one at the air inlet, Xue Lang understood why there were more than 20 people here.

Three shifts, at least a dozen, maybe the shift time is shorter.

After killing the three people, searching the surroundings, and determining that this was a dead end, Xue Lang quickly returned to the room and came to the vicinity of the vent, put away the unused ylang-ylang, dragged the steel pipes of the two beds, bridged the steel bars on the platform and the vent, and asked in a low voice: "Is the march smooth?" ”

"Report to the captain, the march is going well, we are on our way to the last guard position."

Zhang Ming replied as he ran quickly.

Xue Lang knew that their arrival time would not be too short, and the distance from them in a straight line was more than five thousand meters, and at this time, there was only one person to rely on here.

After looking at the time, he returned to the room, closed the air intake, put down the MK17, picked up a handful of 16 and checked it on his back, picked up another and put it around his neck, quickly cleaned up his backpack, replaced all the magazines with 16, hung up a few grenades, and quickly left the room, arrived at the first circular defense channel, held the gun, squatted at the position of the shooting port, listened to the surrounding movements, and waited for the arrival of the team.

Time passed quickly, and as soon as twenty minutes arrived, Zuo Boyang's voice sounded first: "Captain, I saw the rope, I'm coming down!" ”

Xue Lang perked up, relieved a lot, and said in a low voice: "Below is the ventilation duct, the rope is not at the end, the distance is about five meters, be careful yourself, others lengthen the rope, sneak in!" ”

"Yes!"

All the team members ran wildly and whispered their orders.

Zuo Boyang was the first to explore the way and arrived at the location, in the mountains and forests, five kilometers took 20 minutes, and he was strong enough.

Zuo Boyang didn't speak, grabbed the rope and slid down quickly, at the moment of the end, he continued to slow down, and the Dapeng rushed to the position where Xue Lang was standing before, followed by the upside-down golden bell, saw the steel bar, and rushed into the room through the vent in two clicks.

After a slight pause, he saw the open portal and rushed straight down.

Xue Lang heard the footsteps, although it was extremely slight, and judged that it was Zuo Boyang who had arrived, his heart was relieved, and he flashed a corner, and at the moment when Zuo Boyang showed his head, he made a vigilant gesture, then returned to the vent and commanded the team to descend.

In less than five minutes, the team members quickly entered the first stone chamber with sweat stains on their faces.