Along the way, there were two ghost servants guarding the shore every ten kilometers. I even saw a wired phone hanging on the wall next to them.

Suddenly, Brother Fei, who was swimming in front, stopped, and my grandpa and I also stopped.

Looking ahead, we saw a wide stainless steel fence blocking us. The fence was more than thirty meters away from the end of the underground river. On the shore at the end, there were three ghost servants, lying carefully on the edge of the stone, staring at the bottom of the waterfall. .

Behind them, there was also a wired telephone that seemed to be able to be picked up and run on the dry ground. The telephone line extended into the underground river.

Suddenly, I felt Brother Fei casting a spell, which gave me a sense of oppression.

I looked at him doubtfully, and he pointed to the top of the underground river in front of us.

Only then did I notice that on the top of the underground river behind the fence, there were several military green instruments of different sizes hanging on the top. They looked like infrared detectors and cameras. Several lenses stuck out of the fence and were heading towards us. Diagonally downward.

The camera does not use lights. It seems to be a very advanced and expensive high-tech equipment. This can effectively prevent intruders from being noticed. Fortunately, we are ghosts and can see normally in the dark. If we were humans, we would definitely have to use it in this place where we can’t see our fingers. road.

There are also some small instruments such as sensors on the fence. These small instruments and the wires of the detectors all extend under the waterfall. It seems that Feige and the others did not set it up, so Feige cast a spell to form a "field" around us. , making these instruments unable to detect us is of course mainly aimed at cameras, because ghosts can be photographed by cameras and seen by our peers through surveillance, but will not be detected by infrared detectors.

Then, Brother Fei waved for us to follow him again, crossed the monitoring range of these instruments, passed through the fence, and came behind the three ghost servants, and then released the "field" just set.

Being able to pass through fences is a new skill I just learned.

Sensing the arrival of the three of us, the three ghost servants crawled back a few meters to make sure they were not visible under the waterfall, then got up and saluted us, but did not make a sound.

I thought to myself, after walking so far, the upper exit of the L-shaped passage is located at the bottom of the underground river, covered by a rapid and three-four-meter-deep water flow. It is difficult for humans and ghosts to find it, and there are so many ghost servants arranged along the way. Isn't it a bit unfounded to worry about being on duty for a long time?

And didn’t Brother Fei and the others say that the ancestor’s physical body had powerful magic power, and it would be difficult for the Lord of Hell to notice the existence of the golden cave when he passed by?

Also, the servants are ghosts! They are ghosts! Ghosts! These three guys are climbing back so cautiously. Are they afraid that someone under the waterfall will see them? Or hear their lies?

After saying silent greetings to the three ghost servants, Fei Ge took my grandfather and me and followed the behavior of the ghost servants just now, crawling forward and climbing to the edge of the boulder.

Seeing the scene below, I realized that Fei Ge and the others' worries were not unnecessary.

Huge hole.

How huge is it? First of all, the height of the waterfall below us is more than 300 meters, and there is still more than 100 meters of space above us.

This underground river is like a small water pipe that pours water into a large cement water tank.

No, it should be a large iron water tank.

Because the top and wall of the huge cave have been formed with steel pipes as thick as telegraph poles to form a reinforcement network similar to the structure of the Beijing Bird's Nest Stadium. Around the cave wall, about a hundred meters high from the bottom, two wires are hung every fifty meters. There are two large searchlights that shine upward and downward respectively, illuminating the inside of the huge cave as if it were daytime.

God knows how this huge cave was formed, and judging from the sharpness of the underground river, the inclination is not small. Therefore, after traveling for more than a hundred kilometers, it is estimated that this place is definitely more than ten kilometers away from the ground.

The bottom of the cave is close to our side. There is a large oval lake. On the other side of the lake, there is a huge pier. Five submarines are docked at the pier. On the shore next to it, there are work vehicles coming and going, as well as a group of boats.

Sailors wearing white military uniforms, light blue camouflage uniforms or dark blue overalls are busy each other.

I am a military enthusiast, and I can generally recognize the models of submarines equipped by our military, but I have never seen pictures of three of these five submarines.

The other two are the famous Type 094 submarines.

And those three unfamiliar submarines are much taller than the 094 in terms of workmanship, appearance and size.

Behind the pier is a rectangular square the size of four football fields, paved with cement. On the opposite side of the square is a flag stand with three flagpoles on it. Although there is no wind, I can still distinguish the different colors on the flagpoles.

The five-star red flag, the August 1st military flag and the navy flag were hung.

I silently stretched out my hand and saluted in the direction of the flagpole, because at this time my heart was extremely excited, and I was even happier than when I saw the treasure. Our country's navy is so powerful, and I really feel that the efforts of our revolutionary ancestors have not been in vain.

Martyrs! This prosperous age is as you wish!

Behind the flagpole, there are eight khaki five-story buildings with a dormitory-like layout, and a light green eight-story building that looks like an office building.

At this time, in the square, there was about a company of sailors on the left side who were practicing formation in squad units. On the right side, there were several trucks circling, and it seemed that the sailors were learning to drive.

There is a plastic track around the square, and almost two companies of sailors are running circles in platoons.

Yes, there are so many humans working and living in the giant cave. Who knows if there are high-level mages among them. It is right to be careful.

After visiting the giant cave, Fei Ge winked at the three servant ghosts. They silently packed up the phones and wires on the ground and evacuated first.

On the way back, I asked Fei Ge: "Aren't they monitoring at the top of the waterfall for a long time?"

Fei Ge said: "It is our ancestral motto not to provoke the court. Crossing the fence is equivalent to entering the navy's territory. How dare we stare at the interior of the huge cave every day. Therefore, I usually send servants ten kilometers away from the fence.

I would like to stand guard somewhere, and occasionally go over to take a look at the situation inside the giant cave. I even asked the servants to help the navy pay attention to whether other forces are approaching the giant cave from the underground river. Many years ago, the servants also caught three people in the underground river.

A spy from Taiwan stunned them and used magic to safely lower them into a huge cave for the navy to capture alive. The navy installed fences and detection equipment for this purpose."

I thought to myself, Brother Fei did the right thing! Yes, the huge cave is filled with important weapons of the country. Without a country, there is no family. We cannot infringe on the national interests for the sake of the interests of the family, and we even have to try our best to protect it.
Chapter completed!