The picture changed again, and at this time, everyone was inside the space battleship Feijin, in a circular corridor.

Tian Peng and the others were very surprised, they had been looking at the battleship from the outside, but when they got inside, they realized that the inside of the battleship was so huge, and they were so small.

"How many people can this ship hold?"

"Under normal circumstances, it can accommodate 2 million people, but there are more than 3 million humans in the Feijin, not to mention the lack of energy, even food is scarce, and the human race will not last for half a month."

Tianpeng and the others saw that there were dense crowds of people standing under the circular corridor, and they were arguing, as if the riot had been caused by the unfair distribution of food.

The elder waved his hand again, and the screen jumped to the cabin of the time machine.

Inside this large cabin, a huge time machine is parked, which is estimated to be capable of teleporting thousands of people per run.

The elder explained, "The development of this time machine took about 200 years, and it went through countless scientific research teams before Dr. Lin completed the final stage. ”

Tianpeng saw countless people walking into the time machine, and they also brought a lot of personal belongings with them.

"What time can this time machine teleport to?" Jiang Hao said curiously.

"If you were to use the time you have on the surface now, it would be 220,000 years ago. At that time, the environment of the earth was the most perfect, and early Homo sapiens had already appeared, that is, primitive humans. ”

The elder waved his hand again, this time with the image of the Earth 220,000 years ago.

In total, more than 3 million human beings have successfully arrived on Earth, forgetting all their sorrow and pain, cheering wildly, and celebrating wildly......

In this way, Lin Hope and Ekmira became heroes of the human race, and the human even erected two statues for the two of them. However, the happy days did not last long, and mankind only lived peacefully on Earth for about 200 days, and once again ushered in bad news.

"The probe has detected a supercomet approaching Earth, and this collision will likely wipe out the Earth's life. After 30 days of impact, humanity's time is running out. ”

"How could a comet hit the Earth 220,000 years ago?" Jiang Hao said in surprise.

"Ever heard of the butterfly effect, right? In the original timeline, everything was set. And the sudden arrival of more than 3 million people broke the original setting, destroyed the original timeline, and infinitely amplified the butterfly effect. Human beings have greatly influenced not only the development of the earth, but also the development of other planets in the universe. The supercomet was supposed to pass by instead of hitting the Earth, but now it has become exactly the Earth. ”

"And after that? How did humanity survive this? ”

"Humans are too greedy when they travel through time, and they bring too many things from the future. It may be these futuristic things that caused the comet to hit the Earth, but it was also these things that saved humanity. ”

"I understand that in order to survive, humans have started to burrow into the ground and keep digging into the ground." Tianpeng guessed.

"It's easy to say, but it's hard to do. Although humans at that time had highly developed technology and powerful tools, it was not so easy to create an underground world. The elder waved his hand again, turning the screen around.

At this time, Tianpeng and the others found themselves in the mine, and countless people were carrying out operations, constantly digging underground.

There were still 20 days left before the impact time, and the human beings had already dug more than 5,000 meters underground, and began to expand the space frantically at more than 5,000 meters, and the rocks brought up from the ground were piled up on the land, like a large mountain range.

In order to survive, human beings are racing against time to carry out underground transformation, bringing all kinds of soil, all kinds of plants, and all kinds of domestic animals from the surface, and finding ways to electrify the underground to ventilate and purify the air in the underground world, and then connect to the underground water facilities to create facilities that can carry out small-scale artificial rainfall.

With one day left before the impact time, the original Underworld was formed.

In this original underground world, the space here is very large, all kinds of simple houses and facilities have been built, and those high-tech tools are very terrifying, giving great convenience to human beings. The underworld wouldn't have been possible without those high-tech tools.

After that, the comet descended on Earth as promised.

With a loud bang, the only passage connecting the surface to the underworld was buried. At this point, the underground world is separated from the surface world.

The screen disappears, and the entire room turns white again.

The elder led everyone out of the room, but their hearts were still not at peace for a long time, and they always felt that something was missing.

"Elder, you haven't said anything about what happened next?" Tianpeng asked.

"What happened next? Humanity has settled in the underworld, and it doesn't know what's going on on the surface. ”

"Why don't humans in the underworld go to the surface, it should be okay to rely on those tools, right?" Jiang Hao asked.

"Because of fear! The humans of the underworld forbade going to the surface, and all the underworldrs began to embrace theology. ”

"Theology?"

It is to believe that there is a God in the world, and to believe that everything is God's punishment for mankind. Humanity must atone for its sins and never return to the surface of the earth. However, these are also theories made up by rulers to facilitate their rule, in fact, the official explanation is: in order to reduce the butterfly effect, human beings should no longer interfere in the surface world. ”

"What about primitive people? It's those early Homo sapiens. Tianpeng asked.

"Although Homo sapiens are also humans, the gap between them and us is very large, so humans did not bring all Homo sapiens at that time, they only brought some of them. In the beginning, those Homo sapiens were mainly used for research, but later those Homo sapiens intelligence was well developed and gradually integrated into humans. ”

"I'm talking about Homo sapiens on the surface." Tianpeng emphasized.

"Needless to say, the Homo sapiens on the surface survived, survived, survived, and multiplied. Your ancestors are the surviving surface Homo sapiens. ”

"Isn't it normal that the people of the underground haven't thought about returning to the surface? More than 200,000 years, never thought about it? When pigs fly. Jiang Hao asked.

"Come with me to another hologram room, which records the history of the underworld."

Everyone followed the elder to another room, and after closing the door, the room switched to the highly developed underworld.

The current underground world is no longer the original underground world, there are houses, high-rise buildings, robots, flying machines and other things that represent a high degree of civilization, and the streets are full of people, and everyone seems to have come to the metropolis.

"Is this a holiday? Why so many people? Li Ming asked.

"No, it's that there are too many people, and the underground world is not as big as the land world after all, and the growing population has quickly become the biggest problem for mankind. In just over 100 years, a small underground world has a population of more than 100 million. ”

Busy today, a small change, tomorrow a big change, and thank the new tip.

The day after tomorrow, cut to the topic and speed up the pace.