As the aircraft approached the Guardian, the aircraft manually began to change its speed, which was consistent with the direction of rotation of the Guardian, and the speed of the aircraft gradually decreased, and now the Guardian needs to open the hatch so that the aircraft can enter the interior of the Guardian, which is a process that requires strict identification, so the speed is not very fast.

It is worth mentioning that although the current artificial intelligence is already relatively developed, such as the air car has been using artificial intelligence for a long time, but after all, the current spacecraft is more troublesome to operate, and the cost is also extremely high.

The Guardian had already confirmed the identity of the spaceship, the hatch had been opened, and Zhang Tianxue skillfully drove the aircraft into the correct hatch, and accurately linked the exit of the aircraft to the passage of the Guardian. This is specially set so that the pressure does not change when personnel enter and exit, and if a hatch where the ship is stored is pressurized, the waste of air and fuel will not outweigh the cost.

After the aircraft landed steadily inside the Guardian, the hatch gradually closed, the lights were turned on, the door of the aircraft opened, and many scientists walked out slowly.

Due to the rotation of the Guardian, the centrifugal force simulates the gravity similar to that of the Earth, so none of them will float here, which is undoubtedly good news for Liu Xuan and the four of them, after all, they are all coming to space for the first time, and being familiar with this matter also makes them very distressed, but fortunately, the designers of this Guardian think very comprehensively.

Zhang Tianxue also came to many scientists in time, this time he didn't entertain Liu Xuan and the four people, each of these people who can come to the guardian is very comprehensive. Liu Xuan, the four of them, it can be said that there is almost no too prominent place between them.

"Welcome to the Guardian, I will take you to your temporary laboratory, where there are things you need, but there are some things you must also understand, although our Guardian can be said to be the largest low-earth orbit fortress, the energy is still quite limited, and some instruments can only be used together." After Zhang Tianxue finished explaining, he led the way in front and walked towards the inside of the Guardian, followed by Liu Xuan and many scientists.

"We're just called to calculate, isn't that too much to look down on us?" Wang Meng said very boringly, if strictly speaking, Wang Meng is here to play, he is not a scientist in nature, and he is not very good at this aspect. As for Qin Ming and Xuan Mu, all kinds of calculations are indispensable in their research, as long as they are given tasks, they can also use the corresponding software to calculate.

In general, Liu Xuan is proficient in the first place, Qin Ming and Xuanmu are both entry-level, and Wang Meng is a 100% layman who doesn't know anything about these.

"How so? This calculation is not enough for us as a whole, and we also need the help of the ground personnel, and those of us who were invited to the Guardian are mainly to prevent accidents from happening, after all, no matter how fast the network connection is, it is not faster than the people around us. Liu Xuan explained helplessly, the thought of calculating the path of the starfall, his braincase is painful, and he doesn't have to think about it to know how much calculation is needed, some computer software is difficult to calculate, and it is up to them scientists to use human brains to calculate step by step, as for the question of probability, it can only be resigned to fate.

Some of the experimental equipment is shared, but the rooms are also separated, and under the special requirements of Liu Xuan's four people, they went to a larger room, and the facilities inside are also readily available, and the place to live is also here.

They are not in a hurry now, Zhang Tianxue has already informed them, and now the Federation still has to solve the propulsion capability of the interstellar missile first, so the calculation needs to wait a while.

Then, Liu Xuan was notified to hand it over, after all, he is also an expert in dynamics, and the nuclear-powered engines he uses now are gradually transformed on the basis of the machines designed by Liu Xuan, but there is still no breakthrough for the time being.

Zhang Tianxue led Liu Xuan to turn left and right inside the Guardian and came to a gate, in this space station, where every inch of land is valuable, there is no need to introduce Liu Xuan to have such a huge door, this should be the brain of the entire Guardian, that is, the command room of this space station.

Zhang Tianxue verified his identity and Liu Xuan's identity, and the door slowly opened, but it was just a small crack that could be used by one person, after all, this is not an emergency period, and a little energy can be saved.

Entering this command room, Liu Xuan's eyes lit up, there are basically special glass products all around here, it can be said that in this place, you can see the range of space of 270 degrees in front of you, and the field of vision is very wide.

This place is also layered, with a total of three large layers, the bottom layer is the most open, and there are many people who control and supervise all aspects of this space station at all times. The second layer is then provided with the necessary direct data of observations. The second layer is the analysis layer, and the data provided by the first layer are calculated and analyzed by the second layer, and the changes near the earth are always grasped.

As for the highest third layer, the field of vision is even wider, this is the most critical command layer, not to mention anything else, looking directly at the surrounding laser protection layer is the key to knowing this place, although the green laser layer is not too aggressive, but the defensive ability is very strong. The only downside is that the energy consumed is simply too much.

The green laser layer is translucent, so you can look around, and you can see the scene inside from the outside, but it's not much different from the outside, and the floating screen also displays a lot of important data.

There is also a person inside, a middle-aged man, with a resolute gaze and a face full of horizontal flesh, at first glance, he is a very imposing person, staying in the command room, and he doesn't have to think about it to know that this is the supreme commander of the Guardian.

"Report, Commander, I've already brought Professor Liu here." Zhang Tianxue gave a very standard military salute, and then said to the people inside.

"Okay, I've worked hard for you, go down and rest." The commander also returned a military salute and said to Zhang Tianxue.

A soldier's duty is to obey orders, and this is very accurate in Zhang Tianxue's body. Zhang Tianxue took the order, glanced at Liu Xuan, and walked out.

"Professor Liu, welcome to the Guardian, I'm Commander Ringer." The laser layer trembled and opened a small door, before Liu Xuan could enter, the commander's loud voice came out, and at the same time, a hand was also the first to stretch out.

Liu Xuan was flattered, hurriedly entered the most critical position in this command room, and then held Ringer's hand tightly. Liu Xuan also knew that to be able to become the supreme commander of this space station, Ringer was at least the rank of lieutenant general. Ringer's politeness to himself also made Liu Xuan full of good feelings for this person.

After Ringer politely shook hands, he raised his hand and waved, and a virtual chair appeared, which was also directly formed with a laser layer, and the two of them wanted to do it against each other.

"Professor Liu, in fact, we are from the same era, and I was sick at that time and woke up a hundred years later. I heard your name before I fell asleep, and it's a great honor to meet you today. You must know that hundreds of years of peace have also made the current human race a little less sharp, and there are really not many people who can find a sense of crisis. Ringer said first and foremost, sincerely.

Liu Xuan also instantly understood that this supreme commander was actually his contemporary, and if you really want to count it, although Ringer looks more mature than him, he should be about the same age as him. After falling asleep, the underground space bureau was gradually unsealed, and it is estimated that Ringer knew Liu Xuan's name at that time, but Liu Xuan was already asleep at that time.

Liu Xuan was naturally very excited, seeing his contemporaries, Liu Xuan never dreamed of it.

"You're serious, now I'm just an ordinary person, it's my honor to know you." Liu Xuan said with great sincerity.

"I've asked you to hear your thoughts on this matter, and I always feel that the Federation is thinking too simply. Bringing you scientists to the table is also my request to the Federation. Lin Ge also went straight to the point, directly explaining the purpose of inviting Liu Xuan to come this time. Not for the sake of the propulsion system, but for the perception of people of the same era.

"As you said, with the development of the times and the continuation of peace, the new generation of people has indeed gradually lost their sense of crisis. At times, we were worried about the sudden outbreak of war. I think your decision is correct, and the Federation is indeed thinking a little simple. Not to mention other scientific and technological aspects, even in terms of materials, we also don't know the characteristics of this starfall. Missiles seem to be very powerful in our time, but we don't know how advanced alien technology is. If you look at the propulsion system alone, the alien civilization this time is not very different from us, but we just don't know the weapon system. Liu Xuan groaned lightly, and directly gave out all his thoughts.

"Well, your analysis makes a lot of sense. In fact, I'm not afraid that you know that the current Federation is secretly manufacturing starships on a large scale, and as for the reason, you should also know it. Ringer smiled slightly, revealing a secret to Liu Xuan.