The three of them rushed over immediately and moved the wooden bench away. I found another vent appeared below. This vent was much smaller than the one there, and there were also barbed wire and fans as thick as fingers on it, but it was fixed with bolts.

I was a little surprised to see the hole, but I felt it was wrong, because I was not sure if I could get in. It was too small, but I couldn't care about that much at this time.

Wang Sichuan immediately stuck the mesh with an iron rod to pry it, and immediately found that the bolt had been pried loose. I was wondering in my heart, could someone have pried it open and then installed it back? But at this time, Wang Sichuan had already pried off the wire mesh, grabbed the leaves of the fan and broke it out.

The Japanese military facilities were very material. The iron leaves of the fan and the fixed shaft in the center were so thick that it was extremely solid at first glance. Wang Sichuan was covered with gray and oil, and the fan blades were still motionless. Finally, Ma Zaihai used the mesh of the wire mesh to put the nut in the middle as a wrench. He found that the nut was also pried loose, and he took it off after rotating it.

Wang Sichuan moved the iron leaves out and threw them aside. After landing, it sounded very dull. It felt like it weighed 20 kilograms. This must have been produced in the early stage of the war. The Japanese did not have so much metal to waste in the late stage of the war.

The smoke is getting bigger and bigger, and even with flashlight, almost nothing can be seen. I can only barely see the passages full of wires as thick as hands and feet. When the Japanese built this place, everything was definitely based on economic speed, so all ventilation channels acted as cable channels at the same time.

The thinnest Ma Zaihai tried to climb in first, and he squeezed into the passage very reluctantly. I looked a little cold, not because I was worried that Ma Zaihai could go down. There should be no big problem with my body being broken, but Wang Sichuan probably was so shameless.

After turning below and entering the horizontal ventilation duct opening, the space becomes larger, and the horse jumps in the sea and indicates that there is no problem.

Wang Sichuan and I looked at each other, and Wang Sichuan smiled and said, "You go first, I will loosen my muscles and bones."

I shook my head and thought to myself that you will definitely not be able to enter by yourself: "Come on, I will kick you on it. Even if you kick your bones, you will have to kick you down."

He had no objection, after all, he didn't want to die, but after changing several positions, he found that he couldn't find it. Finally, he took off his legs and drilled in with his head down. As expected, he got stuck halfway through the hole.

I jumped directly onto him, and under his wail, I kicked him down little by little with my weight. His shoulders were all worn out, and two blood marks were left on both sides of the passage.

At this time, the smoke had already spread to the top of my head, and I was also facing down and they pulled me down.

This ventilation duct is located on the ground, so we are now underground in the entire area. To the left is the corridor outside. I saw that there are also ventilation openings on the top of the other side, and there is light.

There was also smoke, and all the ventilation ducts were filled with spicy smell. I climbed over carefully and looked up from the vent. There was something blocking the top. The smoke was overflowing and there was no lighting. I could only see the bastard's flashlight flashing, and I couldn't see the rest clearly.

If there was a pistol, I would have shot the kid from this hole and shot out his brain. Unfortunately, he was helpless now, and fortunately, this guy had no weapons. I squatted down and looked in the other direction, judging where I could go out of the pipe, and then kill him and let him know how powerful I was.

The entire dam seemed very quiet because it was too empty. If the exit chosen was too close to him, he would definitely hear the noise of our fan kicking off, so he would be alarmed. I decided to continue climbing forward along the pipe for a while. If I want to smoke us to death, I may have to burn it for a while. He would not have discovered so quickly that we had escaped.

I carefully climbed forward along the cable, and two people followed me. We passed through the exhaust fan openings. The pipes were complicated, and there should be different rooms or corridors on it. Unfortunately, there was no lighting power, and everything was pitch black and smelled of musty. When the flashlight shone, we could only see some messy things that could not be seen clearly.

The dust in the ventilation duct was unimaginable. Soon I was covered with a layer of dust, and it started to get gray grease when rubbed. It was very disgusting. I kept taking them through six ventilation duct openings and arrived at a distance far enough from the screening room before deciding to go up.

But we were stunned when we got there, because there was no thing inside to use as a wrench. Should we go back and get the wire that was unloaded? It was too late, and we couldn't cut it off and put it in. For a moment, the three of us looked at each other, a little desperate.

Seeing the fan stunned for a few minutes, Wang Sichuan became anxious and said, "You can't wait any longer and kick it directly, otherwise we will be killed even if the enemy spies don't come."

I nodded, and there was no other way at this time, so I asked Ma Zaihai to kick it directly. Ma Zaihai put his foot into the fan leaves and kicked it hard, but after half a day, the barbed wire still didn't move at all.

This kind of non-moving is true non-moving, which made me realize that this thing is so strong that it cannot be kicked away by kicking it.

We kicked each other for a long time, but there was no improvement. We went to the next pipe entrance to try our luck, but it still didn't work. I suddenly became depressed and wondered if we would be trapped in the ventilation pipe?

Keep moving forward and kicked in one hole after another. The Japanese engineering level made me collapse, and almost every hole was as strong as it was.

I don’t know how long I had been away, but when I was in despair, Ma Zaihai suddenly shouted: “Hey, this is loose.”

I immediately went up to look and found that the barbed wire he kicked was moving out a little. He was happy, turned his head and made an excited expression at us. After kicking it a few more times, it became loose again. I touched it and found that the barbed wire was not fixed, but was mounted.

He kicked the wire from inside, then stretched out his hand through the gap of the fan's leaves and unscrewed the fan's nut.

The nut is also very loose, and I felt strange in my heart. I suddenly felt that someone had walked this path, but I also felt that it was unlikely.

After that, the entrance of the cave was no longer an obstacle. Wang Sichuan was about to get out of the hole, and it felt like he had given birth to his mother's womb again.

When we climbed out, we saw a gloomy tunnel outside. My heart suddenly became sank because the corridor was very large and could almost accommodate two trucks side by side. It was three stories high, and the naked concrete surface was extremely rough.

It seems that this should be the main road for transportation within the dam, and it should be a 50 or 60 meters away from the projection room, and the office area has already left.

I calmed down suddenly. This was a fearful place. Everything here was extremely strange. Decades ago, there must have been many incredible things here. We still have to be cautious and not be angry.

Wang Sichuan shone the huge tunnel with flashlights, and I immediately found that there were many railway tracks on the ground, which seemed to be used for transportation, and the railway tracks were connected to each other. I saw similar things in the brick and tile factory in my hometown.

After the flashlight shone on the wall, I found an iron sign nailed there, and I wiped off the dust. I saw a string of rusty Japanese with some Chinese characters. I tried to guess a rough meaning, but Wang Sichuan asked me to follow me anxiously in front of me.

I walked over and found that the tunnel was moving forward, with many passages and rooms appearing on both sides, but all passage openings and the outer edges of the door were nailed with very thick wooden boards.

I was a little strange. The feeling here is different from other places in the dam. It looks even more dilapidated and desolate, and the entrance is sealed. What exactly happened here?

If it is to protect the things inside, this method may not have any effect, and the Japanese often destroy things that cannot be moved without hesitation.

"Is it to lock down the Chinese workers you are looking for?" Wang Sichuan said to himself. I shook my head. The Japanese's methods of dealing with Chinese workers will not be so complicated. They will massacre them after the project is completed. Those people will not spend any effort on the Chinese.

Wang Sichuan used flashlight to illuminate the gaps between the wooden boards, and the layout inside was the same as the room we crawled out of the vent, but more of it was impossible to see.

We walked forward and towards one end of the tunnel, and soon we reached the end. As we passed, all the holes were tightly blocked, and none of them were missed.

"It seems that the entire area here is closed." Wang Sichuan said, "We may have to enter the ventilation duct again."

"No," I said, "The Japanese who used wooden boards to close the place must also go out. They will not trap themselves here. There must be an unclosed passage leading to another place."

We walked in the middle of the tunnel, and I looked to the left, Wang Sichuan looked to the right, and Ma Zaihai paid attention to the top of our heads. We turned around and looked for one hole at a time, but we walked to the end of the other side of the tunnel, but we could not find the exit. But at the end of the tunnel, we saw a very huge double-open iron door, with a rust surface and was completely welded from the inside, and I didn't even have the desire to push it.

I really don’t believe in evil, so I searched back and forth again, but still, the puzzle in my heart suddenly reached the extreme.

We had a discussion around the iron gate. This was not in line with common sense. All the holes were nailed from the outside. If they were all closed, the nails would not be able to get out. We would definitely see his body here, but there was nothing in the tunnel except for some empty wooden boxes.

Wang Sichuan didn't say much, and he obviously couldn't figure it out. Several people looked at each other. Wang Sichuan suddenly walked towards a hole and said, "Let's pry open one and see what is sealed in the room, maybe you will know what's going on."

The iron rod in his hand has really become our most reliable tool. Those wooden boards are common poplar trees. They should have been cut down from the forest on the ground. They are all wool materials, which are no longer as strong as they used to be, and were pried apart by Wang Sichuan.
Chapter completed!