PS: Thank you Supreme Long Tian for your support! Thank you a little late, sorry ha-

In the blink of an eye, 2250 years have passed, and more than 200 years have passed since the global unification of the earth's civilization.

Two hundred years is not a short moment even for a civilization, but almost equivalent to two lifetimes for an individual human being.

Therefore, in the past two hundred years, the entire earth civilization has naturally undergone earth-shaking changes.

Specific changes exist in all aspects of the whole society, from people's clothing, food, housing, transportation, food and clothing, to people's working environment, living space, all aspects have been greatly improved, and rise to the height of civilization, specific changes can actually be summarized with some more concise figures.

That is, in the past two hundred years, the total population of the earth's civilization, including the major branches of the solar system, has reached an overall scale of more than 120 billion, and the number of people living in the life circle around the earth alone has reached more than 100 billion, which is more than 10 times the total population of the earth in 2050.

A small earth can accommodate more than 100 billion people, which is almost unimaginable for human beings even a hundred years ago, and most earthlings at that time could not imagine what kind of almost catastrophic state it would be if there were really so many people crowded on the earth.

Will it be crowded, will it not even have a foothold, will it be poor, will it not even have a sip of water? Is there really enough people on earth to carry such a large number of people?

Although these absurd conjectures seem to be unfounded today, at least in the eyes of the people at the time, such worries were hardly exaggerated, and they were really troubling them.

For new humans like Wang Xiaohu, in their feelings, the earth does not seem to be much different from before, and even becomes more beautiful, and the days are becoming more and more prosperous day by day.

After nearly 200 years of vigorous construction, combined with a series of lessons learned from the underground renovation project of the Martian planet base, even if there are hundreds of billions of people living on the earth today, it is still quite spacious for everyone.

Take Wang Xiaohu himself as an example, his family's living conditions can only be regarded as the middle class, and the family assets above the surface are only an old-fashioned apartment with an area of less than 100 square meters, which is a place where the family gathers together every weekend when the family has a family reunion.

More than 100 square meters of living space, which is quite generous in terms of surface buildings, if rented out, every month rental income is a lot of income, of course, Wang Xiaohu's family conditions are good, several uncles and uncles of his father's generation live very well, naturally no one will hit the idea of the old house, will earn that rental money.

For the family, the greatest value of this old apartment is for the elders to live in, so that they can enjoy the fun and happiness of living under the blue sky and white sun, and can breathe fresh air freely.

However, in Wang Xiaohu's view, this is completely petty bourgeoisie, in fact, the cost performance is not high at all, and life can be described as aggrieved!

Think about it, two people have a living space of 100 square meters, not even a small outdoor garden, some indoor facilities that should be had, what gym, game room or something, can't fit at all, and life is tasteless, just to live on the surface, pay such a price, it is inevitably a little too expensive.

For a new human like Wang Xiaohu, benefits are the biggest truth, and he is not as particular about those indifferent things as those old guys.

For example, Wang Xiaohu lives in an underground mansion on the twenty-first floor of the basement, which is called comfortable, and the living space that a person can occupy and enjoy is more than 300 square meters, although the floor is a little deeper, and the distance from the surface is a little farther, and it looks like a hundred meters underground, but for Wang Xiaohu, it is not a matter at all.

The underground buildings are good, they are all ultra-high specifications of solid buildings, located deep underground, not to mention sturdy and durable, the space is especially huge, the rent is relatively cheap, especially the living conditions, everything can be said to be not lacking, the surrounding green environment is also quite good, and the aura concentration has completely reached the normal living standard, which is much better than those buildings on the surface.

Those luxurious living spaces on the surface, if you really want to talk about it, are of course much more comfortable to live in than underground buildings, but there is one thing to see, that is, the cost of living in surface buildings is too high, even if you live in your own room, the annual real estate tax or something, it is a lot of expenses, and the cost performance is too bad.

After all, the vast majority of the earth's surface environment is a primitive planetary environment, such as forests, swamps, ecological reserves, and most landmarks are restricted from development and use. At the same time, it is also for the majority of citizens living in the underground space, to create a natural place for holiday consumption of the original ecological scenery.

In the surface environment under this development situation, every inch of living space can be described as an astonishingly high price, and it is not a place for the general public to live at all.

In fact, the vast majority of human beings on Earth today live in underground buildings beneath the surface.

Underground building has a great advantage, that is, it has an extremely powerful modification ability, no matter how unsuitable for human habitation above the surface, but once it has been perfectly transformed to form an underground space suitable for human survival, it can carry a large number of people.

Although in the old era, the world's population was only seven or eight billion, and the mountains and fields were crowded with people, and deserts, plateaus, ice fields, and islands were full of people. However, after the earthlings organized the administrative machine and started to build underground space at full capacity, the problem of carrying tens of billions of people was no longer a problem.

Just imagine, a building that is built dozens of floors deep underground at every turn, and it is a city as soon as it is developed, and it may not be realistic to fit a large population of hundreds of millions, but 100 million and a half billion or something is not a problem at all.

For such a large underground city, maintaining the operation of the city is a huge challenge, requiring countless materials and energy, and if the technical level is not up to it, it will be a great tragedy.

Fortunately, it is difficult to stop the earthlings organization. In terms of technology, there has long been a mature technology for energy development and utilization, and the supply of basic materials, whether it is water or various minerals, has a steady stream of feedback from meteorite resources, which has brought infinite possibilities to the continuous rise of the upper limit of the earth's population.

Especially the current earth civilization, outside the earth's own soil, there are Mars, On other planets such as Saturn, a series of branch bases have been opened, although the carrying capacity of those branch bases for the population is far less exaggerated than that of the earth, but fortunately, the number of branch bases is quite huge, coupled with the continuous flow of population between the planet bases, can allow most of the human individuals who show symptoms of discomfort on alien planets to return to the earth every once in a while to recuperate and rectify, and finally maintain the continuous growth of the earth's population over the years.

Under the growth of such a huge population and the growth of manpower, it is correspondingly the continuous refinement of the earth's industrial chain, the continuous strengthening and improvement of various industrial production capacities, and the production capacity of various advanced faster-than-light spacecraft branch systems has been realized successively, and now, it is only a matter of time before the first batch of faster-than-light spacecraft appear.

It can be said that in the process of continuously climbing the industrial chain and continuously strengthening the production capacity of the earth's civilization, the development and application of underground space has played a vital value.

Although some people like to pretend to be pretentious, saying that the original ecological environment on the surface is the most suitable high-end living space for elite people to live, Wang Xiaohu, who has always been practical, never blindly pursues face and luxury.

For Wang Xiaohu, who is just starting out and is in the initial stage of his career, he deeply knows what he should pursue now.

Higher cultivation! More hard work! Better work! Lower cost of living! This is the path that young people should follow to strive for progress, and it is actually not too late to pursue something more flashy and more face-saving after they have achieved something in the future.

The earth civilization is now in the last period of depression before the rise, all aspects of social breakthroughs are in an orderly manner, I don't know when I am not careful, it ushered in an unprecedented development opportunity, not in advance of deep accumulation, but spend energy and money on pretending to be cool, I am afraid that when things come, I can't even cry.

Of course, the reason why Wang Xiaohu thinks this way is largely because he is not handsome and has no talent for the profession of pretending to be cool, so he pays more attention to practical results.

However, it doesn't matter if you are not handsome, the value of people is not just to look more handsome, but to have your own value is the real key.

Like Wang Xiaohu, although he is not very old now, and his cultivation is not profound, but because of his continuous hard study and exercise over the years, whether it is academic or cultivation, he is not comparable to ordinary young people of the same age, so that although he is not yet thirty years old, he has become a very skilled space engineer, with space operations, and the technical qualifications for welding the hull deck of the earth's first faster-than-light spacecraft.

To be fortunate to participate in the construction of the world's first faster-than-light spacecraft, this is undoubtedly a huge honor and pressure, although Wang Xiaohu in the entire engineering system, is an insignificant member of the core engineering team of hundreds of millions of minutes, can only complete some low-end, corner nature of auxiliary work, but this is already quite a simple thing, it is Wang Xiaohu through five levels to kill six generals, through I don't know how many tests and selection, only to finally get an important job.

You must know that for the construction system of faster-than-light spacecraft, the entire earth civilization is fully supported, and in the development of two hundred years, the completion of this work has always been regarded as a top priority, and among the 120 billion people on the entire earth, it is no exaggeration to say that 100 billion of them are directly and indirectly related to this project.

However, among such a large number of people, the front-line personnel who can really directly participate in the progress of the project are only a few hundred million people, and Wang Xiaohu can become one of them, which shows that he still has quite real materials.

It's just the core manufacturing task of the faster-than-light spacecraft, although the benefits of participating in it are indescribable, but there is also a little inconvenience, that is, the confidentiality is too high, and the relevant participants often need to soak in the lunar production base for many years, and work by themselves at the front-line construction site, rather than adopting a production process similar to remote control.

For example, a good friend of Wang Xiaohu, he is also a masterpiece among people, not long after graduating from college, he was directly selected for the space post and became a glorious space cleaner, able to operate a 500-ton space cleaning spacecraft to clean the interstellar waterway and ensure the safety of interstellar transportation.

Although it sounds quite low-end, in fact, this is a very high-end, quite demanding space profession, not a position that ordinary pheasant university graduates can achieve, and the comprehensive quality requirements in all aspects are quite high.

However, this work can also be controlled remotely, Wang Xiaohu's classmate takes the class at home every day, and does not delay personal practice at all, unlike Wang Xiaohu, because of job restrictions, he often needs to rush to the moon base, and he works for a month or two, and his food and accommodation are on the moon. Only when you have completed the scheduled task and returned to Earth for a thorough renovation can you concentrate on your personal cultivation, which is a great loss from this point of view.

Fortunately, if you take it all together, Wang Xiaohu actually doesn't suffer.

Although Wang Xiaohu's cultivation time is very affected when he is working, many compensation in other aspects can completely make up for his losses. (To be continued.) )