The Penrose Ladder is a well-known paradox of geometry that refers to a ladder that is always up or down but never ends, and can be seen as a variant of the Penrose triangle, on which the highest or lowest point can never be found.

The Penrose Ladder cannot exist in 3D space, but it can be easily implemented as long as it is placed in a higher order space. Like the Möbius ring, the Klein bottle.

If Pat was amazed at the existence of such a fixed point, he would be even more amazed at such a staircase. He could go around it forever, but he was always climbing upwards and back to where he was again and again! Is this possible? No way! It's just that our eyes are deceived by the picture and think that such steps exist. And these impossible forms are its visual analogues.

I briefly talked to the fat man, and the fat man nodded as if he didn't understand: "So you're talking about an impossible thing, and then we encountered it, right?" ”

"Not really!" I continued, "The reason the Penrose Ladder is impossible is that it's in three-dimensional space, but if it's two-dimensional, it's easy to do. ”

Seeing that the fat man still didn't understand, I didn't explain, so I took out the pistol, and then opened the safety and walked to the wall.

"First of all, let's go in a straight line, right? If this assumption is wrong, then the first condition of the refutation is true, and we are not moving forward all the time. "After finishing speaking, I put the back of the pistol directly on the upper wall, and then directly pulled the trigger, and when I hit the wall, my right hand holding the pistol was shocked by the wall, and I felt a little numb.

"You just say it, what are you shooting?" The fat man rubbed his ears and said with some complaints.

"If I put the gun against the wall now, the bullet will definitely not go the wrong way, and it will not turn around, and if we go with value, then the bullet will keep flying, and finally it will fall to the ground next to this side of the wall." I looked at the fat man who was still sitting on the ground and said.

The fat man seemed to understand all of a sudden, and slapped his head and said, "I see, if the bullet hits the wall on the other side, then his brew proves that we have been going in circles, but haven't we been going down, the bullet should have hit the top of the tomb." ”

"What if it didn't hit the top of the graveyard?" I followed up and asked.

"If you hadn't hit the graveyard...... That is, we have been going around in circles in a horizontal position? The fat man understood what I meant, but when he looked down and saw the steps, he asked again, "What are these steps?" ”

"Eyes can deceive people, the walls and the ground are coated with things that can absorb light, the purpose should be to control people's vision, if I guess correctly, between these steps, there will be a wrong ladder every other distance, contact the principle of light and shadow, make up for the difference in the height we have descended, so that we can return to the same place This thing makes sense." I went on to explain.

"What you say makes sense, but even if it's a circle, there must be an exit and an entrance, and we've gone around two circles, and we haven't seen a single opening." The fat man now understood what I meant, but at the same time he raised a question that I still wonder about.

"Standing on the result to assume the problem, as long as there is a door that can be closed and opened, when we get to the other side of the passage, this kind of door can be left and right, or up and down, in short, it can be realized, let's prove the first hypothesis first, this tomb road, is a large horizontal circle." When I had finished speaking, I motioned for the fat man to get up and continue walking, and our task now was to find the bullet.

If we can't find the bullet, then it's really troublesome, I don't have any bottom in my heart, the bullet didn't hit the wall but disappeared, and I feel numb when I think about it.

After walking for about five minutes, the thing that made me look back and tingle didn't happen, and we found the bullet, which was a shot in front of me on the left-hand side of the grave wall, and the bullet ......

On the right wall!

The bullet had gone straight into the curtain wall, and there were cracked stones all around, which were easy to find, and I walked over to look at it, and found that the height of the bullet was still around my chest, as I thought, so I can now say with certainty that this tomb staircase is a large horizontal circle.

"Tsk, it's amazing, I can't imagine that the pistol I brought with the fat master is not for beating zongzi, but for measuring the tomb." The fat man touched the cracked bullet marks and said with emotion.

Now that the first hypothesis has been established, what we are looking for now is an exit, and there are now two possibilities.

One is that the location of the exit is the entrance, so even if our tomb is in vain, the location of the return must still be the entrance of the cave that came down, so I and the fat man have no choice but to go back the same way.

The other is that the exit and the entrance are separated, and if we find the exit, then there is no way back but to move on.

"What should I do now, how to find an exit, such a big circle, the exit should be just that, it's not easy to find." The fat man said with a glance.

"Forget what you are doing, in this ancient tomb, where there are organs, they must be laid out according to the five elements of gossip, as long as there is an exit here, it will definitely be in the location of the birth gate, as long as we can determine the direction, it is not difficult to find the location of the exit." I reminded the fat man.

The judgment of what I say is still the same, that is, after all, this is in China, not some pyramids and some foreign civilization sites, if it is these places, then Feng Shui may not follow the Yin and Yang Five Elements Bagua Theory.

As early as the Eastern Jin Dynasty, there was a talk of feng shui.

The burial person, by the breath also, the wind is scattered, the boundary water is stopped, the gathering is not dispersed, the line is stopped, so it is called feng shui.

To put it simply, it starts with the wind and ends with the water.

Whoever builds an ancient tomb must learn Feng Shui.

It is the direction in Feng Shui, as the so-called Tai Chi gives birth to two instruments, two instruments give birth to four elephants, and four elephants give birth to gossip.

"You still know yin and yang gossip, Qimen Dunjia?" The fat man asked with some curiosity, with some wonder on his face.

"Studied!" I continued: "In fact, the yin and yang gossip and the valve Dunjia are also a truth, this Qi Men Dun Jia, in fact, to be separated, Qi, Men, Dun Jia, Qi refers to B, C, Ding Sanqi, Door refers to rest, life, injury, Du, Jing, death, surprise, open eight doors, this Dun Jia you can understand as a hidden meaning, refers to the secret Liujia, called Jiazi, Jia Rong, Jia Shen, Jia Wu, Jia Chen and Jia Yan, the Tao inside is very deep, you can not finish the study in your life. ”

The fat man gave me a thumbs up and said, "College students are college students, this knowledge is amazing." ”

I don't know if the fat man is hurting me or praising me, this thing doesn't have half a dime for study, after all, I'm not studying archaeology, who will study feng shui gossip in modern architecture, although secretly I have to follow this, and when I encounter something, I have to pay a high price to ask a master to deduce, but on the surface, no university dares to teach this......

(End of chapter)