"In 2021, the United States, China, and the European Union jointly conducted research on the Mars spacecraft; In 2040 AD, the three countries jointly built the first spaceship, which can easily leave the earth and travel in space. In 2042 AD, humans discovered the first wormhole near Saturn in the solar system; 20...... A.D.

"Wait!"

Yun Yi interrupted him: "A wormhole was discovered in 2042? So, in the history of space exploration, did humans first discover wormholes, and then discover other planets? ”

Bai Kaixin glared at him unhappily: "I don't like people interrupting me!" ”

Yun Yi smiled: "Then you continue, I don't speak." ”

"Hmph." Bai Kaixin then continued: "You also know the wormhole, there is a large number of tincture lanthanum composite rays in it, which can cause fatal damage to the human body. Despite the setbacks, the three countries did not stop there, organized a large number of manpower to study it, and finally built a protective facility, and three years later, in 2045, they sent a spacecraft again to successfully pass through the wormhole to reach the extremely distant starry sky. This year is positioned as the first year of the cosmic calendar. ”

Yun Yi didn't speak this time, just listened silently.

Bai Kaixin continued: "Although we have gone out of the solar system and discovered wormholes, because the warp jump engine has not been studied, the spacecraft has been flying very slowly, and habitable planets have not been discovered, and some people even suspect that there are no planets in space that can be inhabited by humans. In this way, it was not until the 26th year of the cosmic calendar that mankind finally discovered the first habitable planet, and since then it has been out of control, and when the time reaches the 218th year of the cosmic calendar, human beings have begun to march like the hundredth habitable planet. ”

Speaking of this, Bai Kaixin looked at Yun Yi and said, "Do you know that in that era, what was most lacking in various countries?" ”

"Spaceship!" Yun Yi replied with confidence: "As long as there are a large number of spaceships, it means that you can explore more starry sky and find more habitable planets!" ”

"Wrong answer!" Bai Kaixin looked at him disdainfully.

Yun Yi thought for a moment and said, "Energy? ”

"That's not right."

"Mineral resources?"

"That's not right."

"Advanced technology?"

"Not really."

Yun Yi looked for several answers, but they were all rejected by Bai Kaixin, and he couldn't help but ask, "What is that?" ”

Bai Kaixin smiled: "People! ”

"People?"

"That's right, it's people." Bai Kaixin said: "In that era, it took people to drive a spaceship, it took people to develop a new planet, it took people to produce various equipment and facilities, it took people to build a house, it took people to build a spaceship, and no matter what you did, you needed people. So, in that era, what was most lacking was people. Every country vigorously promotes the policy of encouraging childbearing, couples who are healthy but do not have children will be thrown into prison, those who have one child will be despised by others, those who have two children can only be regarded as ordinary, and those who have four children can get a lot of money every year, and women who have more than eight children will even be awarded medals by the state......"

Yun Yi's eyes were full of horror: "Doesn't that mean that women were completely used as fertility machines in that era?" ”

"That's true." Bai Kaixin said lightly: "A woman, as long as she gives birth to more than three children, the state gives her more subsidies every month than most people. Do you think that it is worth working hard outside every day, or can you still get a high subsidy as long as you are free at home when you are pregnant? In order to get a larger population, some countries have even begun to study human cloning...... However, I don't know why, the cloned human beings are not only unable to reproduce, but also have a very short lifespan, generally no more than twenty years old, the gains outweigh the losses, and no one has studied them later. Oh, and here I have to mention the subhuman tribes, at that time, after seeing the results of human cloning, some countries thought it was a genetic problem and began to modify the genes of humans. Later, although it had to be terminated under the joint sanctions of various powers, it also created a lot of strange human beings, who are the ancestors of all the subhuman tribes. ”

"That's how the subhuman tribe came from...... Yun Yi muttered.

Bai Kaixin continued: "Although various countries at that time were vigorously striving to create more population to make up for the lack of human resources in all aspects, you also know that the larger the base of the population, the faster it will grow. Speaking of this, Bai Kaixin suddenly asked: "Then do you know which country was the most populous at that time?" ”

Yun Yi shook his head: "There is no mention of this in the history books. ”

Bai Kaixin smiled: "When the Mars spacecraft was discovered in 2021, the most populous country on Earth was India, with a population of 2.1 billion; followed by China, with a population of 2 billion; The European Union has a population of 700 million; The United States has a population of less than 600 million; Ironically, due to the scarcity of resources on the planet and the increasing difficulty of raising children, families in many countries had only one child or even none at all. It wasn't until 2040 that the spacecraft was built that the three countries recognized the population problem and began to encourage childbearing. In order to increase the population, the three countries have relaxed the entry conditions at the same time, and people from any country can provide them with air tickets, housing and basic living security if they wish. Of course, the leaders of other countries are not fools and immediately strictly control the exodus. By the time of the first year of the universe in 2045, China had a population of 6.5 billion, the European Union 2.1 billion, and the United States 1.9 billion. Then, it entered the space age, and when the time reached 218 years of the cosmic calendar, the Chinese population had reached a terrifying 120 billion, the European Union 30 billion, and the United States still had the smallest population, only 23 billion ......"

"How is this possible!"

Yun Yi couldn't help but exclaim, "How can there be so many people? Take the Zhao Song Empire ten years ago, the Zhao Song Empire, which has more than a hundred planets, has a population of less than 30 billion! At that time, all mankind had only discovered 100 planets, how could it take so many people? ”

Bai Kaixin looked at him speechlessly: "Don't you know how backward technology was at that time?" For example, if you build a spaceship, now you only need a few dozen people to start the assembly line, and the spaceships can be built one after another. And then? It would take at least hundreds of skilled workers to build just one piece of armor, including sheet metal workers, welders, surveyors, inspectors, computer specialists, and so on...... You know, in that era, with the most powerful China, no more than twenty spaceships were built every year, and each one was a very valuable thing. If this is the case with the creation of a spaceship, other aspects can be imagined. ”

"I see." Yun Yi suddenly realized.

Bai Kaixin said coldly: "It seems that you are not too stupid. ”

Yun Yi thought for a while, and then asked: "China's population is mainly Han nationality, and the Han population is the most in the past, but at that time, the population of other countries was also quite large, such as the India you mentioned, the population was more than China at the beginning, even if the government woke up late, but if you speed up the time, the population should be quite a lot, right?" And ......" Yun Yi asked a little puzzled: "I have also seen the characteristics of Indians in history books, why are there no Indians in the universe now?" I don't seem to have seen any of them. ”

Bai Kaixin said: "The main race in India is the Hindustani, not only have you not seen it, but I have not seen it either. This race should be as extinct as the He people. ”

"And the clan?" It was another race that he had never heard of, which aroused Yun Yi's curiosity.

Bai Kaixin smiled and said: "Well, the He clan, also known as the Yamato nation." The main ethnic group of Japan before the Dark Ages. The Ho and Hindustani people were supposed to be extinct in the Dark Ages. ”

"It's the Dark Ages again......" Cloud Wing muttered, "If I asked you how they became extinct, you'd definitely say don't tell me for the time being, right?" ”

Bai Kaixin laughed: "I don't see it, you are getting smarter and smarter now." Okay, it's late, I'm going to bed, I'll talk about something tomorrow. ”

After leaving Bai Kaixin's room, Yun Yi was not in a hurry to go back, but sat in the open space of the rock base, looking up at the sky.

India...... Japan......

Hindustani ...... and clan ......

"Dark Ages...... What is it exactly? ”