Rolling mountains, dense forests, clear rivers, dense houses.

Looking up at the fiery red sun in the sky, Xiao Qingwu pursed his mouth, "Uncle Li, this ......"

If you don't say it with your own eyes, you will never believe that it is true, because everything here is the same as it is on the ground.

I don't know if I don't look back, but when I look back, I find that Uncle Li's appearance has also changed, and there is no change in other places, and a thick layer of cocoon-like things bulge on his forehead.

"Light Dance, this is your true home, under the mantle."

Mantle!

Xiao Qingwu's face appeared with a strange color.

Educated since childhood, I still have a common sense of geography, the crust, the mantle, and then the core, and a small world has appeared here.

Could it be that the legends are all true, and that there really is an underground civilization?

Uncle Li mentioned home, the real home, and my mother also belongs here.

Thinking of all this, she didn't know how to describe her mood at the moment.

"Uncle Li......"

"I know it's hard for you to accept, but it's true, I don't belong to humanity, and you only belong to half of humanity, no, to be precise, you don't belong to the human civilization of this era."

With a light breath of turbidity, Uncle Li's expression became serious, "Today's human civilization has only a history of 5.5 million years from ancient humans to the present, and it can really be called a high level of wisdom, less than 10,000 years.

The knowledge is also very limited, and the understanding of oneself, the earth, and the universe is very shallow. ”

Xiao Qingwu looked at Uncle Li strangely, and stopped talking.

After all, it is really difficult to accept for a while that you suddenly come into contact with something completely beyond your cognition.

"Beneath the earth's crust is indeed the mantle, which is commonly known as the magma layer, because the mantle moves, the earth's crust also has different plate movements, and there is a layer of softened rock at the top of the mantle, and volcanoes will appear in weak places.

However, under the mantle, it is not directly the core of the earth, and there is also a crystal area with a constant temperature, and because of this layer of crystal, it can achieve a constant temperature, and it also creates the world we live in. ”

Listening to Uncle Li's explanation, Xiao Qingwu nodded vaguely.

"The place you see is not big, only the size of a province in China, and there are less than two million people living here, in fact, we used to live on the ground, and when disaster came, a small part of them came here through our technology and took root here."

Uncle Li looked over, "We belong to the fifth generation of civilization, and the technology we have mastered is far more powerful than the ground, but unfortunately we eventually went to extinction." ”

Seeing that Xiao Qingwu wanted to speak, Uncle Li stretched out his hand to stop it and continued, "After a long period of development, we have multiplied to the current ethnic group, and by tracing the past, we have discovered a lot of secrets.

There have been seven generations of civilizations on the entire earth, we belong to the fifth generation, and the modern civilization on the ground belongs to the seventh generation, that is, you. ”

Hearing this, Xiao Qingwu frowned slightly.

Even if she is not a research scholar, she can analyze it.

There have been seven generations of civilization on the earth, and it should have died out, and only a small number of people from the mother civilization have survived, but this demise is not accidental.

According to the current knowledge, there was a period of dinosaurs, which were the overlords of the earth, but in the end, because of the asteroid hitting the earth, which led to global climate change, and thus went to extinction.

Surely the mother's civilization has also encountered natural disasters that cannot be reversed.

"No, our destruction is not natural, but man-made."

Seeing what Xiao Qingwu was thinking, Uncle Li shook his head, "The weakest part of the earth's crust is only about ten kilometers, and the thickest place can reach two hundred kilometers, and there are gaps in the middle, and there is a species that survives in those gaps.

They only have ferocious beasts, no advanced intelligence, and every time they break through the ground, they bring a catastrophe, and we are destroyed by those creatures.

Through many traces of entanglement, we have found some information about the first four civilizations, and we have personally witnessed the fall of the sixth civilization, but we can only survive in this small world. ”

With a wry smile, Uncle Li pointed to the 'sun' in the sky, "It was a power stone that provided light and heat energy here, but more than a hundred years ago, its energy began to dry up, without it, this would be an ice cave." ”

"Didn't you say it's a constant temperature zone?" Xiao Qingwu couldn't help but ask.

"It's a very special place, with a constant temperature of more than 160 degrees below zero." Uncle Li laughed miserably.

Xiao Qingwu thought for a moment and said, "So this little sun may dry up at any time, for the sake of the people here, the ground is the only choice, which is why Mother and you go to the ground." ”

"That's right."

Uncle Li pursed his lips and said, "We have adapted to this place, survived, lived, and reproduced here, and we don't want to be destroyed again, we have experienced destruction, we have witnessed destruction, and we have seen your appearance."

Seriously, we are numb to whether modern humanity will die out in the catastrophe, and we don't want to ask, let alone participate.

You guessed it, the little sun's energy is depleted, we have to think about survival, the ground is the only place where we can survive, so we constantly have people stepping on the ground, and your mother is one of them. ”

"Then you found that ferocious creature and felt threatened again." Xiao said lightly.

"Yes."

Uncle Li did not deny it, "Because of the lack of resources, we have very little technology left, and it is far from being able to recover to the level of the most powerful period, so we analyzed the traces we found and began to change from ourselves."

Some of you have also become powerful because you have gained traces of battle, but the main traces that the entire civilization has gained are not traces of battle, but traces of wisdom. ”

"Traces of battle, traces of wisdom?"

Uncle Li smiled, "That kind of thing that can't be acted on in words, for example, the wisdom you have, the first 5.5 million years have no complexion, why has there been such a big change in the last less than 10,000 years?"

Although your technology is not strong today, you have mastered nuclear energy, and you can fly out of the earth to explore this universe, which is the effect of obtaining traces of wisdom.

As for the traces of battle, you can understand them as special energy, some people are born with divine powers, some people are geniuses in martial arts, and some people have very strange powers, such as Superman in the movie.

There are many more potential people who continue to break the limits of their bodies and master very powerful powers.

Just like the land breeze, you should know something about it. ”

"Then my mom ......"

"She met you on the ground, and then there was you, we can't expose our power outside at will, and she killed someone in the Wang's house, so we brought her back."

Saying that, Uncle Li said, "It's a pity about your father." ”

These words made Xiao Qingwu tremble, and stared at Uncle Li directly, "What do you mean, my dad died in your hands, right?" ”

"Yes."