Because Tianyuan A is locked by the gravitational force of Tianyuan IV, the back of Tianyuan A will be an eternal night. Under the cover of this dark night, Xiao Yu will start another vigorous era of large-scale construction.

This time, Xiao Yu made up his mind that he would never leave the Tianyuan Four Stars with unlimited resources again until he had enough self-protection ability.

The universe is too dangerous. Not to mention all kinds of naturally formed dangerous areas, such as supernova explosions, black holes, neutron stars and other territories, just talking about various alien civilizations is enough to make Xiao Yu afraid.

Xiao Yu is like a toddler, walking in a dangerous jungle full of all kinds of fierce beasts, every step needs to be careful, if one is not careful, it will be captured by the beast and turned into nourishment.

"In order to survive, in order to bring ...... Human civilization is passed on, and I must live. Xiao Yu thought silently, manipulating the new flagship, Tianyuan released about two hundred satellites to provide signal coverage for Tianyuan A.

Xiao Yu lived on the Tianyuan, remotely controlled more than 200,000 robots on the ground, and began the construction of the base.

The surface of Tianyuan A is generally flat, but the details are full of many impact craters. The formation of such impact craters is inevitable, and a galaxy is always chaotic in the early stages of formation, full of all kinds of headless and brainless asteroids that rampant through the galaxy's interior, hitting whoever they catch.

The initial accumulation of matter on a planet is accomplished by this asteroid impact, and it can be that Tianyuan A will gradually increase in volume and mass in the long years to come, but it is just not as fast as the growth rate of Tianyuan C.

These asteroids have brought abundant minerals to Tianyuan A, allowing Xiao Yu to build various spaceships, bases and other raw material sources to be guaranteed.

The first thing Xiao Yu built was a huge scientific research institute. In this scientific research institute, Xiao Yu will carry out research in various aspects, including ultra-remote communication, energy cannons, energy shields, more advanced nanorobots, more efficient nuclear fusion engines, and so on.

At the same time, with the Central Institute of Science as the radiation point, Xiao Yu launched a large-scale site exploration activity, looking for various elements he needed on Tianyuan A, and began to build a large-scale mining base at the mineral deposit site. The collected minerals will be used by Xiao Yu to build the four large particle colliders around the Tianyuan.

At the same time, Xiao Yu also launched a large-scale construction of space batteries. Although the rampaging asteroids will bring all kinds of rich minerals to Tianyuan A, there are some asteroids that do not have long eyes, which will also bring some trouble to Xiao Yu's construction work. For example, if the impact point of the asteroid happens to be at the Central Academy of Sciences, then it will be a big problem.

In order to prevent this from happening, as well as some of Xiao Yu's faint worries, Xiao Yu built these space batteries in full accordance with the highest ability and the highest standards. These space turrets, in addition to being equipped with conventional high-power laser cannons, are also equipped with Xiao Yu's newly developed energy weapons, and Xiao Yu plans to build 10,000 such space turrets.

It's hard to tell if it was built to protect against an asteroid impact or an alien fleet attack.

I have to say that the law of the dark universe, although it is not yet possible to determine the authenticity of the law, but the process of fighting with the lizardman civilization has left Xiao Yu with enough psychological shadows.

In addition to the Central Academy of Sciences, as well as the mining base, the construction base, and the space battery, Xiao Yu also built a huge building.

In Xiao Yu's planning, such buildings, after completion, will be hundreds of meters high, and the number will be tens of thousands, according to a certain mechanical law, distributed at the equator, pole, day and night junction line of Tianyuan A, and so on.

That's what it is...... Planetary engines.

In Xiao Yu's comprehensive plan, the Huantianyuan 4 Large Particle Collider will be built on an orbit of 438 million kilometers away from Tianyuan.

However, if it is built in this place, Tianyuan A will cause serious gravitational disturbance to this giant instrument, which will destroy its orbit. Therefore, on the one hand, in order to rule out the gravitational influence of Tianyuan A, on the other hand, and in order to verify his own high-power nuclear fusion engine construction concept on the spot, Xiao Yu decided to play a big game.

That's ...... By building tens of thousands of large planetary engines, Xiao Yu decided to push the orbit of Tianyuan A closer to Tianyuan by 410 million kilometers. At that time, the orbit of Tianyuan A will be changed from the current distance of 430 million kilometers from Tianyuan to 20 million kilometers.

This is an extremely amazing project, such a project, placed on the previous earth, unthinkable. However, Xiao Yu has now mastered enough large-scale nuclear fusion engine construction jishu, and has a deep enough understanding of celestial mechanics, such a huge project, in theory, can be built.

During the construction, Xiao Yu can also check each jishu he has mastered one by one, and he can also obtain countless shiyan data, which is of great benefit to Xiao Yu's comprehensive grasp of the current technology. This project is equivalent to an exam to assess Xiao Yu's current scientific and technological level.

If this project is finally completed, Xiao Yu's technology will make a huge leap forward at the jishu level, and at that time, Xiao Yu will be able to increase the current sailing speed from a maximum of 900 kilometers per second to 1,500 kilometers per second.

The principle of pushing the orbit of the planets is very simple, that is, through these planetary engines, they will slow down, and then their orbital speed will not be enough to counteract the gravitational pull of Tianyuan 4 on them, and they will fall towards Tianyuan 4. Then, after the Celestial A has fallen into a suitable orbit, these planetary engines will begin to accelerate for the Celestial A, giving it the right orbital speed.

Of course, this process will be extremely slow. In Xiao Yu's planning, the whole process will be completed in ten years.

Generally speaking, with the exception of the special example of the Barren Star, there is always some mineral resources on a naturally occurring planet, no matter how many. Tianyuan A is a typical example of this, no matter how much or how little the reserves are, in short, Xiao Yu found all the elements he needed on Tianyuan A.

Then, the era of vigorous construction began, after the construction of the Central Academy of Sciences and various mining bases, Xiao Yu began the construction of the ground parts processing plant, and then, based on these parts processing plants, Xiao Yu began to build the ground spacecraft workshop and space elevator, and after the construction of up to 500 space elevators was completed, Xiao Yu immediately began to build the space dock, and then after all the preparations were completed, a steady stream of new spaceships began to be built.

After the new spaceship was built, Xiao Yu immediately organized a long-range fuel collection team composed of the Tianyuan, fifty township-level spaceships, and three hundred village-level spaceships.

Because the ultra-distance communication technology has not yet been developed, this first collection of raw materials must be completed by Xiao Yu himself, because only in this way will Xiao Yu fully grasp the entire collection process, and then the corresponding automatic program can be compiled.

With the dazzling Tianyuan IV as the background, Xiao Yu's more than 300 spaceships simultaneously emitted bright blue flames at the tail and began to set off towards Tianyuan B.

The orbit of Tianyuan B is 400 million kilometers from the orbit of Tianyuan A, of course, these 400 million kilometers are the shortest distance, and now, because the two planets orbit in different positions, their distance has expanded to 500 million kilometers. Based on Xiao Yu's current speed of 900 kilometers per second, it only takes six and a half days to arrive, and counting the acceleration and deceleration time, it will not exceed seven days at most.

Along the way, Xiao Yu can be regarded as seeing what is called youthful vitality, the density of matter in the four galaxies of Tianyuan is at least dozens or hundreds of times higher than that of the solar system, almost every once in a while, Xiao Yu can encounter a large meteorite with a diameter of more than five meters, roaring arrogantly in interstellar space. Some irrelevant meteorites are good to say, the meteorites that happened to occupy the forward track of Xiao Yu's fleet could only be eliminated by launching laser cannons, and along the way, such meteorites made Xiao Yu tired of it.

This is a common feature of juvenile stars, and it would take at least billions of years for a galaxy as stable as the solar system to slowly form during the gravitational battles between the planets and the host star. In this process, the asteroids are either expelled from the inner solar system, such as the Kuiper Belt and the Oort Cloud, or coalesce together to form a stable orbit, such as the asteroid belt, or are attracted by large planets and collide, and after billions of years, a stable situation will slowly form.

Obviously, the galaxy dominated by Tianyuan-4, a star that is only less than a billion years old, is still a certain time lag away from forming such a stable situation.

Such a meteorite attack reached its climax when Xiao Yu arrived in the asteroid belt. The asteroid belt of the solar system is just a virtual appearance, and you may not be able to see anything if you wander in it for a hundred years, but the asteroid belt of Tianyuan 4 is worthy of its name, here, with a telescope, in any direction, you can see thousands of meteorite blocks. A meteorite of this density, even with Xiao Yu's current level of technology, would not dare to break through.

There was no way, Xiao Yu only stumbled through the asteroid belt by manipulating the fleet to slow down and the laser cannon was fired in all directions.

By the time we arrived at Tianyuan B, eight days had passed, more than one day than scheduled. Xiao Yu cursed secretly, re-weighed the difficulty of mining in Tianyuan B, and plunged headlong into the atmosphere of Tianyuan B.