Therefore, it is enough to prove that the person behind this deliberately carved such a pitch-black shadow on the stone slab, the purpose is to use the principle of this small hole imaging to form such an illusory upright monster in front of us.

As a result, several of us were so frightened that there was no way to judge the truth or falsehood.

I immediately plugged the hole with something, and in an instant there were many illusory black shadows in front of us, which suddenly disappeared.

It's just that there are still some phantoms with stiff and weird movements, still standing upright in the fog ahead, and it is obvious that there is definitely more than one stone pillar in this room.

I breathe a sigh of relief, only then we can successfully remove the shadows, and then we can restore peace to this place as soon as possible.

I hurriedly dragged a few of them into the darkness in front of me, and as for the monster that would attack at the sound of the sound, it never moved again, as if it had been completely led away by my stone and went somewhere else.

A few of us continued to grope inside, and soon we found another stone pillar, and succeeded in plugging the small hole in this stone pillar.

Finally, the illusory black shadows around us slowly disappeared one by one, until finally only three or four wandering black shadows were left in the fog.

I know that these shadows are real monsters hiding in the mist, and they are the real attackers who attack us.

I asked a few of them to follow me vigilantly, bypassing these monsters as much as possible, and quickly returning to Old Man Wang's side.

As we gathered together, the fog in the air gradually cleared until our entire chamber was calm again.

At this time, we were faced with an empty burial chamber, but there was not a single monster in it, as if they had all been hidden in that moment.

"Where the hell are these monsters hiding? There must be a lair of theirs here, and a way to evacuate from here. ”

Cui Hao stood beside me, staring at the empty tomb in front of him, his eyes full of incredulity.

But I had a guess in my heart, and I immediately turned to the stone wall with a long notch on the wall, and beckoned to them.

"Here, we're going to look for clues here. There is a high probability that the door should be here, and all you saw before should be illusory. ”

I briefly talked about what I found at the time, and how the small hole imaging works.

"Wang Meng, your situation was so critical at that time, so in that case, it is possible that a few of you are wrong. In addition, the visibility here is not very high, if there is also a so-called small hole imaging in front of this wall, then he will show a few people in Riga who were opening the door there at the time through the small hole imaging method on the opposite wall. That's why the wall on the other side is so smooth and flat, I speculate. ”

Hearing my words, Cui Hao couldn't help frowning.

"But if it was only imaged through the so-called small holes, then the shadow was inverted, but what they saw at that time was clearly a normal upright image, which was completely different from what we imagined."

I nodded, and at the same time drew a raised shape with my hand.

"But if you add a convex lens, it's completely different. Since the people who set up the mechanism here in this place have been able to observe the wonder of the small hole imaging, and even reproduce it. Then I'm sure he'll have a way to make a convex lens, after all, it's not that difficult to make. ”

Hearing me say this, Wang Meng fell into memories for a moment.

After a few moments, he looked up at me again, with a hint of suspicion in his eyes.

"Hearing you say that, I seem to think that I may have seen an illusion before, and I didn't realize it."

Wang Meng said, frowning and staring at the smooth wall.

"According to what you say, then the image I saw on it at that time was indeed not too real, but rather fluttering, and I couldn't see the real image clearly. However, at that time, because in that situation, several of us were dealing with those monsters, so several of us thought that it was dark underground, so we couldn't see the image of the real person clearly. ”

I nodded, and everything was confirmed.

If that's the case, the Li family should have left this secret door, which should be on top of the wall behind us with a knife mark.

And this long carved scar may be a mark left on us by someone in this team.

I immediately turned my head and set my eyes on Old Man Wang.

Old Man Wang immediately understood what I meant and thought, and quickly turned around to carefully observe the knife mark on the wall.

Suddenly, there was a bit of excitement in his expression.

"Why did I leak this place just now? If we had known that this would have happened, we wouldn't have had to make such a big turn. ”

I immediately walked over to Mr. Wang's side and followed the direction of his finger to carefully observe a corner of the wall.

I noticed that when we shifted the angle, there seemed to be some faint scratches around the marks carved by the deep knife.

If you look at these scratches from above, you can clearly see that their intermittent lines can be connected into a curve, and a king character is carved around the vicinity of the scar.

Old Man Wang looked quite excited, and hurriedly pointed to this notch on the wall and said to me.

"Someone in the team must have spotted him, so in order to avoid exposing his mark, he used this encryption method to get our attention and make us pay attention to this notch on the wall. And it is the information that really needs to be hidden, just on these small lines next to this notch, these lines can form a curve through a special angle, which can form a trace of a symbol for us. ”

Old Man Wang cherished the symbols on the wall, and explained the situation to me excitedly.

"The word king engraved on the symbol on this wall is the mark set up by our team, which means that several of them should be here now, and they left through this wall."

Hearing this, several of us couldn't help but be a little excited, that is to say, the direction we are looking for next is not wrong, we have to open the stone door in front of us as soon as possible, and take it out of here as soon as possible.

Otherwise, I'm afraid that the fog behind me will rise again, and the few of us will fall back into the encirclement of those weird monsters.

I hurriedly beckoned a few of them to quickly follow me around the wall and see if I could find the mechanism hidden here.

After a while, Cui Hao suddenly exclaimed, and pulled me down as soon as he dragged me.

Then, he reached out to a small corner of the wall, which took on the shape of an inverted triangle, and Cui Hao put a finger into it and poked it inside.

"There seems to be something in here, little master, you can put your fingers in and take a look, I can't be sure what the hell is in here."

I nodded, and put my finger into the small hole, which was very small, and had been covered by a stone brick on it, and almost fit into the wall, completely covering the small triangular hole.

Cui Hao also had no intention of striking every stone brick here just now, and vaguely felt that something was not quite right with the sound here, so he used a dagger to buckle this stone brick out along the gap.

As a result, the stone was just cut off, and the hidden hole in the shape of a triangle behind it was revealed.

When I put my finger in, I could clearly feel that there seemed to be a round shape in it, very smooth.

I carefully touched it with my finger underneath, it seemed to be a round bead, and when my finger touched the table, it kept turning in place with my strength, and as it turned, I could faintly hear the sound of a subtle mechanism working from inside the wall.

"You guys stay a little farther away, I know how this door opens."

Nine turns, I didn't expect to see such an elaborate door lock setting in this place.

After hearing my voice, several of them were stunned at first, but soon scattered around, leaving the space here alone with me.

I stretched out my hand and carefully rotated the nine beads through the triangular holes, and as the beads turned, I could clearly hear the sound of the mechanism coming from inside the wall.

And here the stone slabs above the wall were separated from each other, and cracks were revealed from them, and these cracks were so fine and narrow that they were completely integrated with the patterns above the walls. When I searched here before, I didn't find so many cracks in the wall.

These cracks divide the wall into several pieces, each with its own shape, but with perfectly symmetrical shapes at the upper and lower edges, and can be completely closed when flipped.

As I continued to rotate the Nine Beads, the stone slabs above the walls began to flip in symmetrical directions, flipping the back side out and exposing it to us.

I was happy from the bottom of my heart, it seems that we should go in the right direction next, as long as we can effectively turn the nine beads and turn all the pictures on the wall out, the door in front of me can be opened.