Shi Tiexin looked at the scenery outside the window, recalling the records in the naturalist books in his heart.

In the twenty-third year of the Misty Era, that is, in 1941 of the old calendar, the Human Federation was established, abandoning the previous suspicions and forging ahead. Exchanges and integration among all races, regions and nations have been strengthened like never before, and the pace of human progress has also accelerated unprecedentedly.

In 1946, humans began to freely enter and exit geosynchronous orbit. In the thirtieth year of the Mist Age, that is, in 1949, mankind officially left the central star and established a permanent colony on the moon, beginning to fully conquer the Earth-Moon system. Since then, mankind's exploration and conquest of outer space has suddenly entered the most frenzied era.

In the forty-first year of the Fog Era, mankind's first group of deep space exploration warships was completed and the expedition to Mars began. In the forty-fourth year of the Foggy Era, mankind began to design and build urban space life stations, aiming to create larger, more comfortable and more mobile space life bases.

The Civil Fort Space City was built in the 48th year of the Misty Period and completed in the 52nd year of the Misty Period, with a total of four and a half years. Four and a half years to build a sprawling space city is not a dream at all. You just see that even a nurse sister can tear devils by hand, and the space industry in the Misty Age has a processing speed and processing accuracy that exceeds the imagination of the old Yuan humans.

No matter how bad it is, there is still a force and a mental technique, so if there is any problem, it would be good to use the war spirit to be reckless.

Four years is a long time, and it is said that the new space cities that are being built now are extremely large and fast. This civil fort space city has undergone the first, second, and third solar system developments, and is now part of Saturn's living system. Still in service, the quality is strong.

In this old space city, many of the design concepts are outdated.

There are no highly integrated living areas, no highly complex three-dimensional traffic, and even the width of the streets is not so sufficient. The original intention of the design of the civil fort is actually to provide agricultural products and animal husbandry products and living city, so the shape is special. It is like a flower blooming in space, with petals facing the sun, and the overall appearance is flat.

It covers an area of about 12,000 square kilometers and has a population of more than 8 million. According to the latest census results, the number of people has exceeded 8.6 million, which is close to the red line of the population carrying factor, and it is said that people in the Population Management Office of the City Hall are considering whether to implement an administrative strategy to curb population growth.

Shi Tiexin looked at the street below, people came and went, mostly on foot.

Private transportation is not uncommon here, but it is not easy to find a parking spot in the upper town, so many skilled people choose to walk, and it is not slow to walk anyway. The place with a big palm in the upper city is convenient for those masters of strength and magic, running and going anywhere.

The air-rail train continues to move along the curved track with the sound of the old times. The buildings of Tumu Fort are generally not very high, and the highest is only about forty-six or seven floors, which cannot be compared with those skyscraper forests with three or five hundred floors. When the civil fort was first built, the designer's homeland complex exploded, which made it very old-fashioned, and you can even see many low brick and stone buildings.

Perhaps, until the moment when they really set off to run into deep space, until the moment when they really want to say goodbye to their home planet forever, these conquest generations who conquered space did not understand the taste of their homeland.

Bang, bang, the train kept moving forward, and the light sprinkled from the gap in the tall building, making Shi Tiexin's eyes light up and dark.

This is certainly not sunlight.

Although the fort is designed with a transparent barrier and protective field, it is also possible to unfold the shield to receive sunlight when in the inner solar system. The large flower-like form is designed to receive more light.

But here is the Saturn system.

Saturn's orbit, at its closest to the Sun, is more than 1.35 billion kilometers, nearly 10 times the distance between the Earth and the Sun. Here, the sun has long since dimmed. Looking at the center of the solar system, you can only see an incomparably bright point of light, much brighter than looking at the stars on Earth, but it is wishful thinking to provide sufficient light.

What illuminates the fort is an artificial light source.

The light source looked very similar to the sun, and with Shi Tiexin's eyesight, he couldn't even see much difference. I think this is also the first generation of astronauts who left their hometowns, in order to retain some of the special design of the light source device for their hometown.

The artificial gravity coefficient of 1.0 is a complete simulation of the average gravity of the central star without any difference.

It is precisely because the design style of Tumu Fort wants to retain the flavor of the earth to the greatest extent, and even has a wind, rain and seasonal system that simulates the earth's climate, so Shi Tiexin was not surprised when he crossed the world line, so that he found himself on the earth a few days later.

The speed of the empty rail is not particularly fast.

After all, this is a miniature man-made ecosystem, and it is a product of old times, and the balance is still a little fragile. Even if it has been upgraded later, there are still many taboos to be aware of. The speed of the air rail is limited to 80 kilometers per hour, in case the speed is too fast and something is difficult to control.

But even if the speed was not fast, because there was no traffic jam, the empty rail still used to leave the upper city and run to the Makihara district soon after.

It's just clear.

It seems that there is a Chu River and Han border, and when the air rail train drills out of the last high-rise building complex, it suddenly becomes a large green field in front of you.

As far as the eye can see, there are endless cultivated fields and plantations. Under the blowing of the artificial wind, the crops in the farmland gently sway and rattle, which is a natural idyllic scenery.

There are nine districts in Tumubao, the core of which is Shangcheng District, and the other districts have their own characteristics, and Muyuan District is one of them, which is a relatively local area.

Even today, Fort Civilis Space City is a standard agricultural space city. Agricultural products and livestock products are the main products here. The pastoral area is a place where cropping and animal husbandry are relatively developed.

With an area of more than 12,000 square kilometers, it doesn't sound like much, but it doesn't look small at all. Even if it is an empty rail, it takes more than an hour to reach the urban area of Makihara District. The buildings here are lower and look older. In fact, Muyuan District is also one of the poorer districts in the nine districts.

Boom, the empty rail enters the station, and the door is opened. Shi Tiexin rubbed his forehead, and his somewhat swollen head finally calmed down.

Ever since he woke up, the total amount and intensity of his thoughts in his mind had been rising, and he hadn't stopped all the way. It wasn't until he got out of the car that his thoughts gradually stabilized, reaching the level when he left Fengming No. 1 Middle School.

This shows that his mental cultivation has been brought back without any discount.

Shi Tiexin stepped off the train, stood on the platform and looked at the familiar scenery in front of him, and suddenly felt pride in his heart.

Tumu Fort, Muyuan District, Xinggong Children's School, and the orphanage, I'm Shi Tiexin, I'm back!