Everyone replenished food and water on the spot, regained some physical strength, learned the tacit cooperation of gesture communication, and waited for two hours, but did not see anyone near the tent.

They moved forward, changing directions a few times, but still didn't find anyone.

Wang Shi took the telescope and observed the scene for a while, and suddenly, he pointed in a certain direction and gestured and said: Boss, look, there is a surveillance camera there.

Lin Zhen hurriedly turned out the telescope and observed for a while, there was not only one surveillance camera nearby, but also in other directions, at least to ensure that it could be monitored and seen in all directions.

Wang Shi tried to analyze: "I didn't find a few locations before, but I found it on this location, which means that the entrance to this base is near here, but no one is holding on, are those people very confident that no one will find here?" ”

Chen Geng agreed: "The entrance should be here, but there is no one to monitor and guard, maybe they are very confident in the security level here, and there must be other ambushes near the door, we have to be cautious." ”

Lin Zhen thought for a moment, and then said, "I'll go explore the path first, and you guys will be on standby here." ”

"Boss, be careful." Wang Shi hurriedly said.

Chen Geng also said: "Don't be impulsive, if it doesn't work, we can act at night." ”

Acting at night and acting now, for us, there is only harm and no good, after all, they don't know that someone has broken in, and we have to be surprised.

After he finished speaking, he cautiously dived forward.

At a distance of hundreds of meters, his vigorous posture tried to avoid some surveillance cameras.

It's a pity that there are no cameras here, and Lin Zhen can't dodge them all, so he can only rely on his speed, taking advantage of the fact that the other party is not paying attention to the surveillance video footage, and try his luck.

A few minutes later, he observed for a while at the entrance of a dark cave, checking several camera heads, the red light flashed very slowly, and there was no sound coming from the cave.

He hurriedly gestured to Chen Geng and Wang Shi, and after meeting again, Wang Shi asked, "Boss, didn't you find anything?" ”

Lin Zhen said: "I am a little worried that those people have withdrawn. ”

"Withdrawn? No, do the people here know that the news has been leaked? ”

Let's go in and see, and if there are still people inside, we can ask when they left and where they went.

The three of them did not hesitate and walked quickly inside, the cave was a little wide, as big as four people walking side by side.

There were no lights, so they had to turn on their searchlights and walk quickly towards the front.

After walking a distance through the passage, they found that they began to feel a little dull, which made the three of them feel a little strange, could it be that there is no exhaust system in this place, and if so, how can the people in it survive.

Faced with this question, the three of them were a little refreshed and some hesitated.

"Boss, are we going to keep going?"

Lin Zhen said: "Walk a little longer and see what the situation is inside." ”

The passages here are crooked, and there is no visual sense at all, and there is no way to know what is going on at a distance inside.

Wang Shi said worriedly: "If I continue to walk like this, I am worried that I will faint from lack of oxygen." ”

Lin Zhen raised his eyebrows, feeling that it was a little difficult to advance and retreat, he finally came here with all the hard work, if he didn't gain anything, it would be even more frustrating to be defeated by the enemy.

"You wait for me outside, I'll go inside and observe, and listen to my signal."

After Lin Zhen finished speaking, he turned around and continued to go deeper into the passage, he could make his breathing more slower, and even hold his breath for a long time, which he had tried a little before.

Now that I have life energy, I should be able to hold my breath for ten or twenty minutes.

He glanced at the time of his watch, and he was only ten minutes away from the depth before he had to go back.

He walked quickly inside, and soon came to a fork in the passage, which made him a little tangled.

Before, he encountered the intricacies of the underpasses in both L and K countries, and now there is still nothing to discover, and he doesn't know if there are still many intersections inside.

He wouldn't have worried too much if he had the usual exhaust system, but now he had to worry not only about breathing, but also about getting lost.

After pausing and thinking for a moment, he hurriedly left a mark on the ground and chose one of them to walk, and a minute later, he encountered the cave wall, and the front was blocked.

"Damn!"

He angrily punched it on it, boom, it was originally used for venting, but now it was actually pierced by his punch through the cave wall.

With this punch penetrating the cave wall, a gust of wind blew over, and it felt a little cold.

"Huh, it's windy?"

Lin Zhen was surprised, broke through all the cave walls in order, walked in for a while, and found that the ventilation effect in front was very good, so he went back and called Wang Shi and Chen Geng in.

"Could it be that it is congested, so it has been a long time, and the oxygen here is very thin?"

Chen Geng was surprised.

Lin Zhen said with a cold gaze: "No, someone should have done it deliberately, I suspect that the entrance we came in just now is not the main entrance, it should be a trick, the three holes of the cunning rabbit, this is a kind of arrangement of the other party." ”

Wang Shi understood a little and asked, "Does that mean that the other party did not evacuate, but the place where we came in was an entrance that the other party deliberately created and abandoned?" ”

"It should be, let's go in through the passage inside, it shouldn't be too far."

Soon, they got in.

Smell some cold air, and a faint fragrance, if it is purely exhaust, it is easy to be filled with the smell of earth, which makes people feel uncomfortable after smelling for a long time, this faint fragrance should be used to buffer the pressure of some people breathing in this place for a long time.

A few minutes later, they zigzagged and walked for a few dozen meters.

After turning around several times, they suddenly saw some light and some sounds in front of them, which made them a little surprised.

They had passed several forks before, and they couldn't figure out the direction anymore.

Fortunately, there was air flu in the passage here, and there was no feeling of suffocation in the breath, so that the mood was relatively calm, and the discovery of these sounds and lights let them know that they should have reached a more central place.

The three of them found that the passage in front of them was getting smaller and smaller, and could only accommodate one person squatting and walking, and it was a little difficult for them to turn around with their backpacks, and the more they walked, the smaller the passage became, and even the space for squatting was relatively small, so they had to lie on their stomachs, but fortunately, the passage could accommodate the size of a package, and they dragged their backpacks while walking forward.