Guimenguan, Huangquan Road, Naihe Bridge, Sansheng Stone...

In the eyes of the Chinese people, these things have an ominous meaning, because they are the places where the dead pass through in the underworld.

So, when I mentioned these three words, even my master's face clearly flashed with surprise. He looked around, thinking that I had made him a little suspicious of life. That look was a bit cute.

But after all, he is a master at the level of a Heavenly Master. Even if he doesn't understand what I'm saying, he can finally understand this place well. He looked at it again and settled down again, with a slight smile on his face.

Lao Bai couldn't help it anymore. He was holding a cigarette in his mouth like a gangster. He gasped for air after being frightened and almost swallowed the cigarette butt. He choked and coughed repeatedly. He followed his chest and shouted again and again: "You are

Say...we are in the underworld right now?"

As he said this, the tease even felt his own pulse...

"You are not dead. This road to hell is not the other road to hell."

I said: "Our Chinese ancestors have a word called wearing linen and wearing mourning. People nowadays think that they just wear linen clothes. This is actually a bit wrong. According to the strict funeral process that our etiquette officials are responsible for, the so-called wearing linen and wearing mourning,

Not only the linen clothes, but also a hemp rope on the buttocks of the dutiful son, and a veil on the face of the dutiful daughter, which should be put down when she cries.

Whether it is hemp rope or face covering, it must be burned on the day when the deceased is buried. These two things are prepared for the road to hell. The deceased will use hemp rope to tie his luggage and use face covering to wipe sweat.

, because the road to hell is very long, and without these two things, it would be very difficult for the dead to walk.

This is true for the dead, let alone the living?

The way we often talk about going to Yinsi actually does not take the Huangquan Road. You can just go directly to the Yinsi Yamen and talk about Yinsi, because the Huangquan Road is endless for people and there is no way to go out.

This kind of road is called Huangquan Road, which actually means this."

After saying this, I looked at Zhang Xinya and said, "What's the name of the note and bottle you played with Xiaozhi that time? Didn't I tell you at that time that there was such a structure in the tomb?

."

Xiaozhi has to learn cultural knowledge. These things can't be taught by us old men. Most of the time, Zhang Xinya comes to teach. She is of a high standard. She talks about things in a wild and unconstrained way, and it is definitely not the things in the textbooks.

, very complicated, and often came up with some concepts that we couldn’t understand. That time, she folded a piece of paper into a circle, and bought a strange-shaped glass bottle from somewhere for Xiaozhi to play in the yard.

At the same time, I was explaining this kind of thing to Xiaozhi. I thought the shape of the note and the glass bottle was a bit interesting. It looked like a kind of tomb passage mechanism specially used to trap people in tombs, so I went up and told her about it. As a result,

Zhang Xinya rattled off a string of foreign names, as well as a lot of weird principles, which made my eyes go straight, but in the end I still couldn't remember the name.

Obviously, the tunnel we encountered was the kind of tomb tunnel mechanism that I mentioned at the time, which was specially used to trap people, so I mentioned this.

But that was a long time ago. Zhang Xinya was still confused, but her childish memory was good. After hearing this, she immediately said: "Is it a Möbius strip and a Klein bottle?"

"Yes, that's the foreign name!"

I slapped my thigh and said, "Yes, that's absolutely right, it sounds familiar!"

At this point, Zhang Xinya came back to her senses. She looked at Lao Bai and Brother Yaozi for a while, with a meaningful smile on her face.

I know this person very well, and I just like to see the confused expressions on our faces to get pleasure. I also say that this is called IQ crushing, it is very hurtful, and it is definitely a bad taste.

But this time we are not hanging around together as usual. My master is here, and the way he looks...

Well, serious and serious.

In short, Zhang Xinya's bad taste not only gave us a double critical hit, but also gave my master a hit. He coughed heavily. Zhang Xinya's whole body trembled, and he realized that he was a little distracted. He smiled and said:

"The Möbius strip and the Klein bottle are actually just guesses about the dimension space and the size of the universe.

Note, this is a guess!

First of all, no one can say clearly whether dimensional space exists, let alone the universe, right?

Regardless of these, let's just talk about the Möbius strip.

This is just a hypothesis once - can a piece of paper exist with only one side?

Flip the paper tape 180 degrees and connect it end to end to get a Möbius strip.

Scientists believe that the Möbius strip is something in the two-dimensional world and has only one side in the three-dimensional world.

Assuming that ants are things in the two-dimensional world and let them move along the Möbius strip, the ants will eventually come to the conclusion that the Möbius strip is endless!"

While saying this, Zhang Xinya tore off a piece of paper from my notepad, and while talking, she started folding the paper ring like the one I saw last time.

This is very intuitive. Brother Yaozi and the others looked thoughtful after watching it.

Afterwards, Zhang Xinya put down the paper tape and said with a smile: "If you tap two Möbius strips together, you can get a Klein bottle. This is just a bottle with a hole at the bottom. It extends Pingzi's neck."

It twists into the inside of the bottle and then connects to the hole at the bottom. It is completely different from the spherical surface and has no distinction between inside and outside. It is a very interesting thing.

Some scientists speculate that the universe is a high-dimensional Klein bottle. It seems vast and boundless, but is actually just a cyclic space. They believe that if you want to solve the problem of the size of the universe, you must ultimately go to a higher level.

Dimensional space to find the answer.”

High-dimensional space, the edge of the universe, etc., this is not something we can think about. It is no different from eating instant noodles and picking your feet while worrying about national affairs.

I picked up the "Mobius Strip" she threw on the ground, traced it along, and said, "Did you see it? This thing goes around in circles without a head. This corridor has this shape, but it's just like this."

The scale of the construction is very large, and the overturned area is also very long for us, so it is not easy to detect. However, if you feel it carefully, you can still find that the ground of this corridor is a little tilted in some places. This has appeared in the tomb before.

Many people were trapped and died in the tomb passage, so we also call this tomb passage the Underworld Road. It is much smarter than ghosts building walls. People who don’t know how to go in have to go back the same way.

, or just wait to die!"

Brother Yaozi vaguely understood, and immediately asked: "Then how should we get out?"

"Didn't Zhang Xinya say so?"

I said: "If the universe is a Klein bottle, what we think of as the inside of the universe is actually the outside of the universe. The so-called end point in our eyes is the place where the bottleneck intersects. Whenever we think we have reached the edge,

, it’s actually just back again. The exit is actually just at that intersection.”

"This is too scary..."

Lao Bai murmured: "For a civilization five or six thousand years ago, it was already amazing that such a huge stone city could be built. Now even the theory of dimensional space and the size of the universe has emerged. What do you think this Three-Eyed Kingdom is?"

What kind of weirdo are you? Have they already started studying the universe? Didn't someone say it? The end of science is metaphysics. Co-authoring these things should not be the end of scientific research, so I turned my head and started studying dragon veins and so on.

Right? Then...research yourself to death?!"

This guy has a very rich imagination. Scientists have long guessed that the earth has a history of billions of years. Many things that happened in the past cannot be traced back. It cannot be ruled out that highly civilized species were born in the past, and their level of civilization is far beyond the past.

Isn't it a prehistoric sin for humans who are more advanced than today to co-author this Three-Eyed Kingdom?

Don't tell me, this rhetoric is quite scary and there is a market for it.

But thinking about the scale of that huge stone city, I shook my head and rejected it. The scale of a city can in a sense reflect the level of civilization at that time.

Cities are not large, that is, their populations are small.

What is population linked to? Agriculture!!

If you don't have enough food and your population grows, one child will starve to death, and the whole family will starve to death for the sake of the children. That's a four-legged gold-eating beast, and it's no joke.

The soil here is not the kind of soil on the grassland. It is very suitable for planting. It is simply a granary. If there are current scientific and technological means, the field area here can support 80,000 or 90,000 people.

That small city... can it reach this size?

Just kidding, thousands of people support me!

And looking at the scale of the market, at most it’s just the level of the market that has just entered the period of internal and external services. To put it bluntly, it’s the level of civilization during the Shang Dynasty!!

"Empiricism!"

Finally, I made this guess, shook the Möbius strip in my hand, and said with a smile: "See, it's very simple. A child might be able to figure it out for you just by playing with it, and then it can be developed into something better."

High-level things are called empiricism. In fact, many things can be inspired in daily life and finally made. However, if you want to systematically explain the principles, it will be complicated, so I guess this will happen here.

The tunnels are discovered accidentally in daily life, which is the same as the tomb passages on Huangquan Road that appeared in ancient times."

What else did Lao Bai want to say, but my master waved his hand and interrupted him. If this big mouth continues to scaremongering, we won’t be able to stay here. We must go back home quickly, otherwise we will dig out a piece of cake.

The atomic bomb can kill us with one shot until we are floating side by side with the sun. What else are we playing with?

After resting for a while, we walked along the corridor again.

I had walked through it last time, and the overall model of the corridor was already in my head. It was not difficult to find the so-called "end". After a while, I stopped, looked at the height of the corridor, and then pointed.

He said at his feet: "Put the shovel down from here, dig about one and a half meters, and then start digging sideways to the side, and you should be able to dig it out!"

As soon as he finished speaking, Wushuang started to pack things and was ready to make a move.

Brother Yaozi came up to me and asked me in a low voice: "Tell me, where will we go if we dig out from here?"
Chapter completed!