Then the tall man walked to the bow of the boat, and gently raised a very small sail, and when the wind blew, the sail swelled slightly, and drove the boat little by little towards the lake.

Soon, the wind increased little by little, the tall man controlled the sails, and the boat became faster and faster, and the whole process was almost silent, and the waves on the surface of the water could almost be ignored.

I finally understood why they were waiting for the wind, because if they were using oars, the paddling would be too loud.

An hour later, the boat moved to a certain location in the lake, and the tall man looked for it, turned in a certain direction, and sailed to a certain location, and when he looked closely, there was a shadow.

I couldn't help but be startled, the Tianchi is hundreds of meters deep, and it is impossible to see the bottom of the lake from the surface of the water.

But I soon found out that it was a false alarm, it was just an underwater reef, not large, only a few square sizes, and the surface was strangely shaped, it should be a reef formed by volcanic melting and cooling.

The tall man put away the sail at a distance, and the boat slowly rowed over by inertia, stopping accurately above the reef, and then he gently placed an anchor made of stone on the reef to prevent the boat from being blown away by the wind.

The whole process was as gentle as possible, not allowing himself to make a single sound, and even his breathing became extraordinarily long.

His caution made me even more nervous, the tall man was strong, and the harrier was stronger, but he said that if that thing was alarmed, everyone would die, and no one would come back alive.

It can be seen that the pressure that thing gave them, and they are still like this, so I am even more hanging.

After securing the boat, the tall man began to undress, put everything he had with him on the boat, leaving only a pair of underwear to cover his privacy, and motioned for me to follow with his eyes.

When I turned around, I saw that the harrier was also undressing.

Helplessly, I had to do it, and soon took off my own stripes, and by the way stuffed the night pearl into my mouth, and the two of them noticed my little action, but they didn't say anything.

When they had finished taking off, the old harrier and the tall man carefully disembarked and stood on the reef, and I followed, and they took another stone from the boat and handed it to me.

I understand that this is a stone for sinking.

Then we walked to the edge of the reef, and little by little we sank into the water, towards the bottom of the heavenly pool.

We had almost nothing with us, weapons, clothes, everything we had left on the boat, except for a small bag around the neck of the tall man, and other than that, the stones in his arms.

The stone is surprisingly sinking, a bit like ore, it is very dense, and we sink very quickly by the force of gravity.

The water quality of Tianchi is surprisingly good, thorough, the bright moon is in the sky, the water is illuminated in a white expanse, although it is not too far to see, but the situation of ten meters or the like is still seen clearly.

And as the depth of the water increases, the speed of light decay is not fast, and it is still clear at very deep positions.

The cold water irritates my pores, but what makes me even colder is the unknown existence.

I instinctively looked around to the left and right, but I didn't notice anything unusual, and I glanced at the old harrier and the tall man, who also looked a little nervous, and kept their mouths shut to prevent the bubbles from escaping.

After about two or three minutes, we finally slowly sank to the bottom of the lake, and the huge water pressure made me feel very uncomfortable, even if there was a night pearl, it could not completely offset the pressure that was enough to crush the bones of ordinary people.

At that moment, the light suddenly disappeared and the surrounding area became invisible.

I was already nervous, I was startled, I instinctively looked up, but I couldn't see anything, it was pitch black, and the moonlight was gone.

But soon I realized that something was wrong, there was light in the distance! And the light is moving over there, slowly coming towards us!

My heart flashed with lightning, not because the moonlight was gone, but because there was something above our heads that covered the light!

My heart skipped a few beats, what a big thing!

Hurriedly looked at the top of his head again, and found that there was really a big thing above his head, which was indescribable, black and swarthy, and it was very unclear what it looked like, like a dark cloud passing through, obscuring the light.

It took more than twenty seconds for the thing to completely leave, returning the light to us, and an incomparably thick armored tail slid swiftly past us.

The scales were thick, glowing with a cold metallic sheen, each one the size of a basin, and it was covered with sword bones, which looked like a thorn in its tail.

I was shocked and completely stunned for a long time!

This thing, the aircraft carrier is not that big, right?

After reacting a little, I hurriedly turned around and found that the old harrier and the tall man were also standing in place, their faces faintly pale, obviously shocked.

After a pause, they cautiously glanced in the direction in which the shadow had disappeared and beckoned to me to follow.

I walked cautiously, stirring the water as gently as I could, and finally understood why the harrier said that if it was discovered, everyone would die.

The giant shadow couldn't see the whole picture, it was so big that with just one mouth, even if we were covered in fins, we wouldn't want to escape.

And the giant shadow is obviously able to control the water, and when it crosses, I can't even notice the change in the flow of water, silently, if I don't see it with my own eyes, I can't even detect it, like a silent ghost.

……

The old harrier and the tall man led me slowly around the base of the reef at the bottom of the lake, and soon a dark hole appeared in front of me, and the turbidity we stirred up was slowly flowing into the hole.

Looks like the entrance to an underground river.

Without saying a word, the old harrier dropped the stone and got in, and soon disappeared into the hole. My scalp was numb, and the underground river was winding underground, and God knows where it leads, and he actually went in like this.

The tall man twisted his head at me and motioned for me to go in, obviously keeping an eye on me.

I had to drop the stone and get in.

As soon as I entered, I felt like I was drifting forward under the impact of the current, and I couldn't see my fingers or see anything.

Fortunately, the tall man also came in later, holding a small bright flashlight in his hand, which allowed me to see the environment inside the entrance clearly, and also saw the old harrier in front.

The passage is potholed, naturally formed, obviously with the characteristics of lava, winding downward, the slope is quite large, but the strange thing is that the water flow is not fast, very gentle.

It went down like this, for about ten minutes, and the depth of the descent was at least several hundred meters, and finally a fork in front of it appeared, one up and one down, and the current was obviously going down, and the width there narrowed sharply.

Only then did I understand the reason for the slow flow of the water due to the large slope, it turned out that the dark river was funnel-shaped, wide at the top and narrow at the bottom, so the water flow was slow enough.

The harrier swam straight to the top, and I hurried to follow, and very strangely and unexpectedly came out of the water, on the surface of the water was a large underground space, pitch black, and nothing could be seen.

I'm a little confused, this is obviously against the common sense of physics, the water flows to a low place, how can there be a space here that is not flooded? But after taking a breath of air through my nose, I completely understood that this space was dead, there was no air flow, no breath could be supplied, and there was a faint smell of sulfur in the air.

It's more like a space than a giant bubble, a bubble compressed underground by the lake!

After we went ashore, the tall middle-aged man took out two small flashlights from the small bag on his chest and gave them to me and Harrier, and also took out a jar with a mask, put the mask on his face, and took a few sips vigorously.

It was a very small oxygen cylinder, and he couldn't hold it back.

The tall man looked at me after sucking and motioned for me to want to, I shook my head and said I didn't need it, so he gave the oxygen cylinder to the harrier.

After the harrier finished sucking, we went to the deepest part of the space; Not far away, obvious artificial traces appeared in front, and it was messy, like a construction site.

I even saw quite a few cylinders with chemical oxygen labels on them. In addition, there were tattered tents, wooden boxes, glass bottles, oxygen masks, iron cages, rusted steel cables, kettles, and drinking glasses......

And the most shocking thing is the white bones and corpses in one place.

This place has been visited by a great number of people before, and they have all died here; There are still traditional characters on the wooden box, which should be from the Republic of China era. The old harrier had known the situation here for a long time, and walked all the way without stopping at all, passing through this construction site-like place and coming to the innermost.

There was an artificial opening, and a wooden beam was erected on top of the hole to prevent it from collapsing, but it was rotting.

At this time, I swept the flashlight and found a skeleton sitting next to the entrance of the cave, wearing an oxygen mask on its head, an oxygen cylinder around its waist, and the clothes on its body were almost rotten, and it died for some reason, and there was no injury in the bones of the whole body.

What caught my eye the most was the chest mark on his chest, which should have been sewn with needles and threads, relatively dense, not completely rotten, and some of the fonts were still faintly recognizable. If you take a closer look, it is written in traditional Chinese: 207 Regiment of the Fourth Brigade of the First Army of Northeast Security, and the back is not clear.

In just a dozen words, I thought of a person like lightning in my mind - Zhang Zuolin!

The Northeast Security Force is the Northeast Army, which is the army of Zhang Zuolin, the king of the Northeast in the Republic of China.

The fat man told me that Zhang Zuolin in the Northeast once killed the dragon, he sent someone to cut off the dragon veins of Changbai Mountain, cut off the foundation of the Manchu Qing Dynasty, monopolized the Northeast and became the king, and even entered Gyeonggi for a time.

It's a pity that his dragon slaying was the same as Qin Shi Huang's, and he was quickly killed by the island invaders, and the foundation he left behind was also the second death!

The electric light volcano in my heart, is this the place where Zhang Zuolin slays the dragon? We have reached the point of the dragon vein of Changbai Mountain?

……