When the Iceman Space Battleship was about to come out, a metal canopy was slowly rising from the buildings dotted on the plain, and soon enveloped the space inside the entire bubble.

Inside, the metal canopy is constantly rising, with 12 channels, reducing the entire bubble space by 20 meters.

At the same time, there are also some huge pillars built of new materials inside, which rise further from some of the giant platforms.

There are 108 of these giant pillars, and after calculation, they are able to perfectly support the huge metal canopy. With the characteristics of the new supermagnetic building material, there is no need to worry about collapse.

For the sake of aesthetics, various buildings will also be erected around these giant columns, so that the people on the ground will not seem to be affected by the giant columns, creating a certain sense of oppression.

It turned out that when Li Chunfeng was formulating the plan for excavating alien warships, he thought about simply building an undersea city, a city shrouded in a metal screen.

Between each layer of metal screens, there are many repulsion output ports, which is equivalent to 12 invisible repulsion barriers in the undersea city, ensuring that the seawater will never backflow.

At the same time, this kind of metal screen cover has a strong protective effect, each one has a thickness of one meter, 12 are superimposed, and even a megaton nuclear explosion, as long as it is not a head-on hit, it is only a shock wave, it is completely impossible to destroy it.

What's more, Li Chunfeng, who has various offensive and defensive means, will not let people drop nuclear bombs here. In space alone, a number of space-based supermagnetic particle cannons and electromagnetic railguns have been arranged.

For more than a month, Li Chunfeng has not only deployed a network of satellites, but also some space-based weapons in the earth's orbit to ensure that his base will not be hit by long-range ballistic missiles, especially missiles with nuclear warheads.

After more than a month of experiments in the complete ecosystem in Hai'an Town, a complete ecosystem will also be built in this newly built undersea city.

Humans can live here freely.

As the metal shield closed, outside the 12 metal shields, a new electromagnetic shield was activated again, which was the electromagnetic shield technology learned from the Iceman's space battleship.

With it, the attack effect of nuclear weapons will be greatly reduced again, and if you want to break through its defense, you first need to exhaust its energy.

However, at the Tianfeng-2 underground base, the newly built cold nuclear fusion reactor provides a steady stream of energy for this shield, and new cold nuclear fusion reactors will be added in the future to ensure the energy supply of the entire metal shield.

On the metal shield of the entire undersea city, there are multiple entrances and exits for the "Hurricane" flying saucer to enter and exit, and at this time, Li Chunfeng controls the "Hurricane" to fly in through one entrance.

As soon as I entered the space of the undersea city, the canopy of the metal shield was gradually brightening, and an artificial sun slowly rose into the air along a certain orbit.

The entire space suddenly lit up, and at this moment, a behemoth slowly rose from the huge black hole.

The towering figure, blocking the artificial sunlight in a considerable part of the area, the Iceman's warships have no anti-gravity devices, and their warships are all built in space factories.

Battleships that can take off directly from the surface of the planet are generally small and medium-sized space warships of the destroyer level, which completely rely on powerful power engines to get rid of the gravitational pull of the planet.

Large warships generally do not fall to the surface of the planet, because when they take off again, it is too wasteful of energy, and it is usually not necessary.

Li Chunfeng has carried out a major transformation of this battleship, not only equipped with anti-gravity Thor engines, but also installed a holographic visual stealth system.

Of course, the main control computer of the battleship has been replaced with a super magnetic quantum server group, and No. 5 has also been upgraded to a super artificial intelligence, and due to absorbing the information of space warfare in the iceman's main control computer, No. 5 has naturally become Li Chunfeng's military director.

For this reason, after Li Chunfeng digested and absorbed the military knowledge of the earth, he also passed it on to No. 5, so that he also had the most complete military knowledge base on the earth.

On the plains of the undersea city, a place was planned in advance for the temporary mooring of warships.

At present, some modifications of space warships have not yet been completed, and the most critical thing is that when the space battleship performs the last space jump, the energy circuit of the warship is damaged due to the one-time injection of energy from the cold nuclear fusion reaction tower.

Although some of the repairs were made, and with the help of modified Thear engines, the battleship could fly out of the ground, but since it had no base in space to repair it further, it could only be completed in an undersea city and fully inspected before it could fly back into space.

So after the Iceman battleship flies, it will anchor here and wait for it to be completely repaired before taking off again and flying into space.

Looking at the space battleship in space, Li Chunfeng was still a little excited, although he had seen it many times.

At this time, it was slowly landing towards the mooring, and the space battleship flying up and the buried in the rock formation looked and felt different.

Overlooking the space of the entire undersea city, at a height of 1,000 meters, there is no longer much sense of depression, and the quadruped robots of "Lux" and Iceman are hurrying to fill the huge black hole with huge boulders that have already piled up in the distance.

After all, where the battleship was originally located, there was red-hot lava about a hundred meters below it.

Li Chunfeng didn't want the lack of pressure here to cause lava to gush out of here, so he had to complete the backfill work as soon as possible and add a certain amount of weight to suppress the lava.

The previous preparations were sufficient, and a huge amount of rock had already been dug up from the mountains not far away, and now it was just a matter of filling it in.

As for the large copper mines and ancillary gold mines that I saw before, it is natural to take this opportunity to build a good mining cave and turn a large amount of ore into raw materials.

Li Chunfeng did not expect that the reserves of this high-grade gold mine would reach 5,400 tons, and if he finished mining and smelting, it would be a huge fortune.

It's just that it doesn't seem to be of much use to myself.

After the battleship came to a standstill, a hatch in the upper part opened, and six Iceman's space fighters flew out with a roar, surrounding Li Chunfeng's "Hurricane" flying saucer.

Compared with the "Tempest", the Iceman's space fighter has its own advantages and disadvantages, and the Iceman's space fighter is a manned fighter, some of which are life-sustaining equipment and anti-load equipment.

This is what Li Chunfeng needs to learn to use, because his "Hurricane" currently does not have such equipment, and it is controlled by the intelligent brain, which is a robot variant.

Although the Iceman's life-sustaining equipment is not suitable for human use on Earth, some design concepts are still very useful, and the most useful is the load-resistant equipment.

As a nitrogen-based life, its anti-load capacity is 1.5 times that of human beings on earth, and after using anti-load equipment, it can fully adapt to the requirements of interstellar operations.

The Iceman's space fighter originally also had a drone version, but because the Iceman never developed real artificial intelligence, the intelligence level of his computer was a little worse than Li Chunfeng's weak artificial intelligence.

After many practical verifications, the UAV did not have any advantage in the face of manned fighters, so it was abandoned by the Iceman.

In the main control computer of the Iceman space fighter, there is not too complete information, and some of the historical information of the Iceman was also obtained from the personal computer in the Iceman's living quarters later, but they are either vague or brushed aside.

Overall, only a little bit of the Iceman society and their technological system can be learned.

Their scientific and technological system is relatively simple compared to the earth, and it is basically characterized by low temperatures. (relative to earthlings)

The overall scientific and technological progress is very slow, but the progress in the field of electromagnetism is relatively fast, and then there is a qualitative leap, the iceman has the low-temperature nuclear fusion technology very early, so he went to the stars earlier than the earthlings.

In order to break away from the home galaxy, which is in the midst of decline, the Iceman has a strong desire to expand externally, spreading for nearly 20 light-years in just a few thousand years.

How can an iceman without space jumping technology be able to scale into an area as huge as 20 light-years?

The answer is, wormholes!

According to the Iceman's account, there are several natural wormholes near the galaxy in which he lives, and it is through these wormholes that they travel to other galaxies.

The requirements and instructions for flying in a wormhole are detailed in the main control computer, after all, it is a compulsory course for space cruisers.

In thousands of years of starry warfare, the Iceman has also gained some technology from other civilizations, such as quantum communication technology and quantum theory.

And these records are also the most confusing place for Li Chunfeng, after all, the technological development of the iceman and the scientific and technological development of some civilizations encountered are not as good as the earth.

You must know that the recorded history of human beings on the earth is only thousands of years, and the real scientific development is only more than 300 years, but the speed of scientific and technological development of human beings on the earth is comparable to the speed of the universe for the icemen and other alien civilizations.

Is there anything special about human beings on Earth? Or are we being fueled by a more advanced alien civilization?

Li Chunfeng, who couldn't figure it out, simply didn't want to, but sent most of the quadruped robots on the space battleship out to work.

This undersea city must be completed as soon as possible, with this kind of steel fortress-like city, Li Chunfeng at least does not have to worry about being planted with mushrooms by country M.

As for the "Defender" military exercise that Lao M was about to conduct, Li Chunfeng had already learned from his military network that it was a combat operation against the so-called aliens.

However, Lao M's movements are not fast, and he is still assembling in country A before the exercise.

It just so happened that Li Chunfeng was also busy enhancing his own strength, so he didn't pay attention to them.

Anyway, the scientific research ship they sent was still conducting reconnaissance in the area of the last battle, and did not enter the defense circle of the base, and they only sent a "Hurricane" to harass them in a specific way and completely tow them there.

Now that he has a real space battleship in his hands, he doesn't have to worry about any country on earth that can pose a threat to him.

In fact, it would be a joke for country M to launch a nuclear strike on its own base after gaining a foothold in space.

All ICBMs have to fly out of the atmosphere, and when they go to space outside the atmosphere, will they, with space-based weapons and space warships, let them fall to the earth again?

As for medium-range missiles, not to mention that the INF treaty signed by M and E was reduced back then, even if they were rebuilt, would they still let them be launched?

Without worries, I will be able to better march towards space.

After all, Li Chunfeng couldn't judge whether the Iceman's home planet had received the previous distress signal, so he could only take precautions and accelerate the growth of his strength in order to deal with the crises that might come in the future.

Therefore, space development is not only imperative, but also intensified, and more talents are needed to assist themselves.

This is an idea that came from studying some of the scattered social data in the Iceman battleship.