[In the middle and late of the same year, return to Mars]

After a while, Peng Xiaoming and Li Bang came to Mars in a spaceship. From the porthole, Mars was a faint fireball, revealing only part of it, and the rest was obscured by the cloak of the eternal night of space. In the night sky next to it, a little silver light flew by, vaguely outlining what looked like an irregular sphere, which may be an artificial satellite orbiting Mars, or another nearby spaceport.

"You don't know about 'pseudo-civilization', do you?" Li Bang asked with wide eyes.

"I must know that the only enemy of the Human Federation and the surrendered human rebels is now. Most of the rebels have surrendered, but they are still stubborn. Peng Xiaoming said, "In the Federal Council, the Surrender Emissary Mechanical Girl has already said a lot about this history. ”

"At first, there was a 'negative civilization', and then there was a 'pseudo-civilization'...... Alas! Li Bang sighed.

"Strictly speaking, he didn't come from 'behind', he already existed, and he was originally part of the 'negative civilization', but for some reason he betrayed the 'negative civilization', thus forming another group ......" Peng Xiaoming was anxious when he spoke, and couldn't help but "cough" a few times violently.

"Don't be in a hurry." Li Bang said, subconsciously looked at the electronic star map tiled on the wall, and found that he had reached Mars, "but the name 'pseudo-civilization' was taken by the people of the Chinese nation, that is, our nation." It has a bit of the charm of the 'puppet army' of the nineteenth-century Kuomintang two hundred years ago. ”

Unconsciously, the spacecraft slowly drove into the spaceport, and when passing through the berth entrance, Peng Xiaoming and Li Bang both felt that they had entered the embrace of home, and there was a red planet below. Unconsciously, Peng Xiaoming thought of the earth, the human home more than 45 years ago: the green earth, the blue ocean, the undulating mountains, and the plants that grew in the dark...... Although there are some elements that Mars also has, but there are many more things, and people have lost it.

Li Bang's thoughts were different from Peng Xiaoming's, he looked at the inside of the spaceport, there was a huge indoor helipad, and at the same time, there were some people on the apron who got off their spacecraft and breathed fresh air. He looked back at the entrance he had just entered, and found that there was no door, it was just an empty opening, and he couldn't understand why the oxygen inside didn't leak, could it be that there was some kind of technology that he didn't know? Is there really a special door that can't get out with only the gas you need? But this is too "empty".

In fact, he guessed half right. At the entrance of the moor, there is a pure force field that maintains the air pressure in the room so that it does not emit out, and this pure force field is indeed a "door". Li Bang didn't think much about it, anyway, he is an old man who is over half a hundred years old, what he should do is to spend the rest of his life happily and enjoy his life.

Suddenly, two men in military uniforms came over and stopped the spaceship they were taxiing on the ground, and Peng Xiaoming immediately stopped the spacecraft manually. The two uniforms knocked on the hatch of the spacecraft and signaled to open the door, and Peng Xiaoming complied.

The soldier got on the spaceship, saying that he wanted to check for "dangerous goods", and the two learned that the spaceport was under heavy guard, probably because of the experience of the nuclear strike in the previous months. After the soldier got on the spaceship, he took out the detector in his hand and tapped it a few times. Unbeknownst to everyone, the detector continued to send out several careful detection waves, and the two whispered a few words, then retracted the detector and smiled to indicate "It's OK to go".

The two of them steered the spacecraft to glide on the ground for five minutes in a row, and finally found a parking space, and then the two turned off the manual mode, and the spacecraft began to move automatically to the parking space......

Time flies, and the two have already disembarked from the spacecraft, and then take the public rail car to the entrance of the space elevator. So the two walked in, found a place to sit down, and waited for the moment to set foot on Martian land.

……

[At the same time, the Cornerstone Empire]

"It's been a lot of time since I left the original universe." Person No. 2022 sighed and said, "I don't know what the big universe has experienced? ”

"Are you stupid?" Person 9527 said, "The big universe won't go through anything, and he, like our small universe, has only passed more than ten threads of time since it split. ”

"After the small universe separates the big universe, the two become isolated from each other, because time and space are integrated, space is isolated, time is also isolated, since the separation of the big universe, we stand on a new timeline, and the speed of time flow will be different." 2022 retorted, "So, the time that passes between the two is not the same. ”

"Your theory is correct, but our great civilization adjusted the ratio of time flow to 1:1 at the beginning, that is, our universe has passed 1 time filament, and the original universe is also 1 time filament." 9527 hit back again with the facts.

"Oh." 2022 said speechlessly.

"But, we're going back soon," 9527 said.

"Why?"

"We're also going to destroy ghosts, even though it's a fantasy in our minds. However, let me tell you. Outside the universe, there is something called a 'supermembrane', and all the universes are on the supermembrane, and the universe is a small cavitation bulging on it because of the oscillation of the supermembrane. Of course, the space that we wander in the big universe will not break away from the supermembrane, and the ghosts must have discovered this as well, so it is very likely that they will attack our small universe through the supermembrane in some way. Therefore, my great cornerstone empire is the first to strike, and the council plans to re-align the small universe with the large universe, and then return to the large universe to find ghosts, and at the same time ...... Find an alien friend you've met before, a human. 9527 replied.

"Moreover, this law has only recently been discovered, because the subtle oscillations of the supermembrane can cause some changes in the curvature of our space, but this is also very small, but in the end it was discovered by careful scientists." 9527 supplement.

"Another question, what kind of existence is superfilm?" 2022 Raise Questions.

"It's a perfect world. The supermembrane is 11 dimensions, which is 10 dimensions of space plus a time dimension. Of course, time is a pseudo-dimension, in a sense. The hypermembrane itself is a complete dimensional expansion, and the ten spatial dimensions are all extended to the macroscopic. 9527 explained.

"But in our universe, there are only three dimensions released into the macrocosm and form our world."

"Definitely. But those dimensions that seem to be absent are, they are...... Curled up. ”

"Definitely. A subtle but important feature of the spatial dimension: there are two types of spatial dimensions. It may be large and stretch far away, and it can be directly revealed; It can also be small, curled up, and hard to see. Like what...... It doesn't seem like there's anything to draw onto. "9527's communication field stopped vibrating for a few moments, proving that it wasn't "talking", it was thinking.

After a while, 9527 said, "You can go through the database of extraterrestrial friends, humans, who also have some knowledge of the dimension and have made ...... String theory, which contains the theory of dimensions. ”

"Although they are not as far as us in science, their culture and beliefs can be said to be colorful and brilliant." 9527 continued.

For the macroscopic dimension and the curled up dimension, we can take the example of a water pipe: we know that the surface of the water pipe is two-dimensional, but when we look at it from a distance, it looks like a one-dimensional straight line. Why is that? It turns out that the two dimensions of the water pipe are very different, and the one dimension along the extension direction of the pipe is very long and easy to see; The circle that is easy to go around the tube is very short, "curled up", and it is not easy to find. You have to get close to the water pipe to see the dimension that circles around it.

Our universe has large, easy-to-see dimensions like water pipes extending horizontally—the three dimensions we normally experience—and dimensions that are condensed like the horizontal circles of water pipes—and these extra dimensions are tightly conjured up in a tiny space.

It's the same with the micro dimension, which is very small and has little effect on the macro level. In terms of the universe, at the time of the Big Bang, only three dimensions were extended, and the other dimensions were not extended, so it seemed insignificant. If we want to witness the true appearance of the higher dimensions, we must make achievements in the microcosm, and we must explore the lowest and deepest level of matter.

Finally, the question returns to the plan of the Cornerstone Empire, which aims to glue the space at both ends, and then return to the universe to destroy the "ghost" army. If you want to manipulate a space at will, you have to enter a space that is one more dimensional than this space, because in the higher dimensions, compared to the original space, it is like having the power of God, and it is very easy to manipulate the space. For example, if we are in three dimensions, we can twist a piece of paper at will (imagine that there is a two-digit space on the surface of the "paper"), and we can fold or even tear it at will. Therefore, the cornerstone empire can ascend to the dimension, and then connect the three-dimensional large universe with the three-dimensional small universe, which is as easy as origami in the fourth dimension.

So, with this hope, the Cornerstone Empire is ready to return to the universe and march towards the "ghost".