After Li Shichang received Li Tianyi's call, he only said two words, then ended the call and asked Li Tianyi to wait for him at home. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

In less than ten minutes, Li Shichang came to Li Tian's family, and Li Tianyi smiled and said, "Big brother, it's really fast." "Li Shichang is in Huaxia City, hundreds of kilometers away from Liberty City, if he is on the earth, even if he takes a plane, it will take more than an hour, but the technology of the undersea city is very developed, and it only took a few minutes for Li Shichang to come by flying car.

When Li Shichang heard Li Tianyi's words, he sighed, "This is the benefit of technology." ”

"Hehe!" Li Tianyi smiled faintly and said, "Big brother, sit down, whatever you like to eat, take it yourself." When Li Tianyi spoke, he motioned for Li Shichang to take the spirit fruit on the table and eat it.

Li Shichang took a spirit fruit at random and said, "In other places, it is really not easy to eat a spirit fruit." ”

"If you like to eat spirit fruits, you can come at any time, well, after a while, you can also bring some back to eat. "Li Tianyi.

"Then you're welcome. Li Shichang said.

"Hmm. Li Tian nodded, changed the topic, and said, "Big brother, you know, although the environment of the undersea city is good, as the population of the undersea city increases, the consumption of energy is getting faster and faster. ”

"This?" Li Shichang pondered for a while and said, "These days, we often discuss this problem, but there is no good solution." ”

Li Tianyi asked, "Big brother, how is the situation with immigration?"

"Migration is nearing its end, the urban population has all moved to the undersea cities, and only a small number of rural populations, as well as some people in remote mountainous areas, have not yet moved. ”

"Whew!" Li Tianyi said lightly, "This time, I can finally breathe a sigh of relief." ”

"Yes, the problem of immigration has been solved, but now, there is a new problem. According to previous calculations, 8 billion people on the earth have been transferred to undersea cities, and the energy of cities can be maintained for about 100 years, but the population of cities will grow.

Think about it, in the middle of the last century, the population of China was only 400 million, and the population of the world was 2 or 3 billion, and in just half a century, the population of China grew to 1.7 billion, and the world population grew to 6 billion.

Nowadays, the medical conditions of the undersea city are better than that of the earth, the environment is also better, the mortality rate is greatly reduced, and in the future, the life expectancy of ordinary people will be extended indefinitely, and they can live for three to five hundred years, so that the population of the undersea city will grow very fast.

In a hundred years, the earth's population will grow to 20 billion, or even 30 billion, it is possible that the population will increase by two to three times, then the rate of energy consumption will also increase by two to three times, and perhaps, in a few decades, the energy of the undersea cities will be exhausted.

Now, the underwater city looks very good, everyone lives and works in peace and contentment, and the living environment and living conditions are much better than before, but if the energy problem cannot be solved as soon as possible, the earth civilization will die again, of course, ordinary people do not know this situation, and now, ordinary people are very satisfied with their current life.

Li Tianyi, "Big brother, if you can't find new energy as soon as possible, the undersea city can only last for decades." ”

"Hey!" Li Shichang sighed and said, "The state wants to implement family planning again, but this proposal has not yet been passed." ”

"No!" Li Tianyi.

"Hehe!" Li Shichang smiled bitterly and said, "I also know that it can't, and besides, those big people also know that family planning is not feasible." ”

"That's right. Li Tianyi, "Big brother, have you thought about it, in the next ten or twenty years, the earth civilization will really go out of the planet, and at that time, what our earth civilization lacks the most is the population." ”

"Yes!" Li Shichang agreed, "According to the star map you gave us, there are millions of life planets in the Milky Way alone, so as long as our earth civilization goes out of the planet, we need a large number of people." ”

Li Tianyi, "Sister Lan told me that only when the population reaches one trillion can it be called a cosmic race. ”

"Trillions?" Li Shichang couldn't imagine how much a trillion people were, and now, the entire earth's civilization has a population of eight billion, and there are already a lot of them, and there are all kinds of problems and contradictions every day.

Of course, Li Tianyi can't imagine it, but he understands that if the earth civilization wants to gain a foothold in the universe, it needs so many people, so family planning cannot be implemented, and after the earth civilization leaves the planet, the most lacking thing is the population.

After a while, Li Shichang said, "The migration mission on the earth is nearing the end, and in another decade or two, there will be a second migration." ”

"There's no way around it. Li Tianyi, "Now, although we earthlings live in a third-level civilization city, the earth's civilization has not even reached the first-level civilization, and there is no way to replenish energy for the undersea city, so we can only migrate outside to reduce the energy consumption of the undersea city." ”

Speaking of this, Li Shichang asked, "By the way, do you know where there is spacecraft energy?"

"This, Sister Lan told me, she said, there is energy on Mars, in addition, Jupiter, and the asteroid belt all have energy, as long as we mine these energy sources, we can start the spacecraft and let the spacecraft sail away. ”

"That's good. Li Shichang said, "By the way, can these energy sources supplement the undersea city?"

"Can't?" Li Tianyi, "Sister Lan said that these energy sources are low-level energy sources, and even if they are mined to high-level energy crystals, they can only be used on spaceships, and they can't charge the city." ”

"Uh!" Li Shichang said a little depressed, "It seems that we have no other way but to immigrate." "Of course, everyone understands that underwater cities look big, but they have limitations, and even if they can replenish energy, they can only live in one or two billion people, so when the time comes, they still have to develop outside the earth.

"Hmm!" Li Tian nodded and said, "At present, this is the case, unless we reach the third level of civilization, then we will have the ability to recharge this city." ”

"Since there is energy on Mars, then we have to plan and go to Mars as soon as possible to mine energy. Li Shichang said.

Li Tianyi, "I plan to go to Mars in two days, and when the spacecraft is fully charged, I will go to other planets." ”

"In such a hurry?" Li Shichang asked, "When are you going to leave Earth?"

"Within two years, I'll be away from Earth. "Li Tianyi, now, he has reached the Jindan consummation, staying on the earth, it is already difficult to advance, he has to go to other planets to find cultivation resources, and at the same time, he also opens up cosmic routes for the earth civilization to find habitable planets.

As mentioned earlier, there are millions of living planets in the Milky Way, and these planets are theoretically living planets that can be inhabited by life, but they are not necessarily suitable for earthlings.

For example, some life planets are Mercury, which is full of water, no land, only some small islands, and such life planets are not suitable for earthlings to live; for example, there are dinosaurs, monsters and other powerful creatures on some life planets, and such planets are not very suitable for earthlings to live; in addition, there are also some life planets with intelligent life, these intelligent lives are similar to earthlings, and the degree of civilization is not lower than that of the earth, and such life planets are not very suitable for earthlings to live.

Li Shichang said, "When I'm done with things on earth, I may leave the earth with you." ”

"Hehe!" Li Tianyi smiled and said, "Okay, when the time comes, we will be the pioneers and pioneers." ”

"Hehe!" Li Shichang smiled heartily and looked up, "I don't know what it's like in the universe?"

"Haven't you developed a lot of virtual online games? Among them, there are interstellar virtual online games, and I think the environment in the universe should be similar to the virtual games you have developed. "Li Tianyi.

"How is this possible?" Li Shichang said, "A game is a game after all, how can it be compared with reality, I think, the environment in the universe must be very complicated." ”

"Yes!" Li Tian nodded slightly, "Sister Lan said that there are countless civilized races in the universe, and some races are much stronger than the earth civilization. ”

Li Shichang said, "Our undersea city is a third-level civilization, you say, what is the highest civilization in the universe?"

"This, Sister Lan mentioned it once, she said, the civilization in the universe is divided into nine levels. "Li Tianyi.

"Rank Ninth?" Li Shichang said in shock, "I don't know what a ninth-level civilization looks like?"

"We'll know when we see it. Li Tianyi, "Besides, the ninth-level civilization is too far away from us, and now, we can't replenish energy to the third-level civilization city." ”

"yes, take it one step at a time. Li Shichang said.

Next, Li Shichang and Li Tianyi talked about the issue of energy distribution, and the result of the discussion was that the distribution should be made in the order of priority, and whoever discovers the energy mine will have the right to exploit it.

After Li Shichang and Li Tianyi finished talking, they stood up and said, "Okay, I'm going back." After he finished speaking, he stood up, and at this moment, Ni Na happened to come back from outside, saw Li Shichang, and hurriedly said, "Big brother, when did you come?"

"I've been talking to Tianyi for most of the day. Li Shichang said.

"Big brother, will you eat here?" Ni Na said, and slowly walked into the living room.

Li Shichang said, "No, I still have something to do today, so I'll go back first." ”

Li Tianyi stood up, took some fruits from the locker, took a few spirit fruits, handed them to Li Shichang, and said, "Big brother, these fruits are quite delicious, take them back and taste them." ”

"Hehe!" Li Shichang took the fruit and said, "Okay, after I go back, I'll be busy again." ”

Ni Na saw that Li Shichang had something to do, and she didn't stay too much, and after Li Shichang left, Ni Na sat on the sofa casually and said, "What are you talking about?"

"What else can we talk about? "Li Tianyi.

"Hey!" Ni Na sighed slightly, she was also worried about the energy problem, of course, she lived with Li Tianyi and discussed the energy problem, but there was no good solution.

Li Tianyi, "Okay, eldest lady, don't be sad, Sister Lan told me, there is energy in the solar system, and when we mine energy, we will be able to sail away, as long as we move the earthlings to other life stars, we can solve the energy problem." ”

Ni Na listened to Li Tianyi's words, but she couldn't be happy, the look on her face seemed to be happy, like worry, a little worried, a little expectant, a little confused, and then said, "Tianyi, you say, what is the universe like?"

"Go, don't you know?" Li Tianyi said calmly, similarly, he also had some expectations, and then asked, "Miss, will you go to the alien world with me?"