Underneath Marin Town, after several months of construction, almost all of Marin Town has been hollowed out.

One hundred meters underground, a huge world is gradually being perfected.

The top, the top floor of the Chogon, holds this huge underground space in place.

On both sides, the reinforcement devices of the same superalloy structure make it difficult to leave an obvious pothole even if it is a tank main gun.

According to the data given by the base, outside the alloy with a thickness of up to five meters at the top, there is a special cement layer up to fifty meters thick, and between the cement layer and the superalloy, there are several interlayers that are protected from radiation.

Cai Ruichen, who entered the underground world for the first time, only naively thought that the underground construction mode of the Red Police unit was to build an underground space to place the construction unit.

However, when he learned about these structures, he understood why a minimum depth of 100 meters above the ground was needed.

That's because the underground space created by the base not only has an extremely strong load-bearing capacity, but also has a special cement layer to hide from any detection instruments, and a radiation isolation layer to protect against all kinds of radiation.

Such a structure has exceeded the standard for the construction of nuclear bomb silos.

Fixed nuclear bomb silos, because they are fixed and cannot be moved, can easily become the target of the first wave of attack when a nuclear war breaks out.

In order to ensure that the silo can withstand a nuclear attack, each nuclear bomb silo is not only built to be extremely strong, but even able to resist the damage of nuclear radiation to the people below.

Therefore, the construction of nuclear bomb silos is actually very complicated. The construction price is also very expensive.

The underground construction mode of the base construction. Its defense capabilities also exceeded the construction indicators of nuclear silos.

With the defense data given by the base. Even if it is an air-space kinetic weapon, it may not be able to penetrate this layer of defense.

Of course, such an uncertain representation is due to the fact that the mass of the air-space kinetic weapon determines the destructive power.

If you encounter more than a ton of tungsten rods, let alone such a defense, even if it is an additional level of defense, it will be difficult to resist.

The energy of its kinetic destruction has reached the level of a medium-sized meteorite.

So. If you really encounter a space-based weapon like the Battle of God, then this layer of defense will not be able to resist it at all.

However, if it is against conventional weapons on the ground, or just small kinetic weapons in low-earth orbit, there is still some defense.

In addition, not even any penetrating bomb in the world can threaten half of it.

At present, the underground world built by the base is already the size of Marin Town, and the scope is still expanding.

The first layer of the future underworld. It will cover an area of more than 100 square kilometers and be a veritable underground mega-industrial city.

And that's just the first stage. In the second stage, it will continue to go down, from 100 meters underground to 500 meters underground, and all of it will be used and divided into layers of underground space.

Cai Ruichen's plan is that in the next fifteen years, this place will become a super underground kingdom capable of accommodating at least 50 million people.

However, it is difficult to say whether such a place will be opened, and it is not delusional to want to complete such a crazy construction work.

Once again, this subterranean space has expanded to a world of almost twenty square kilometers.

The overhead is completely augmented with reality, plus the sun's ultraviolet light, so there isn't much difference between here and outside.

The town of Marin, located not far from Lake Cersar, has good groundwater resources underneath.

Good groundwater resources are excellent use, two simulated rivers are being built in the underground space, and in the future, there will be a simulated waterfall formation on the next level.

After the construction is completed, it is expected to be connected to the underground space built by the No. 1 Technology Expansion Station in the Arabian Desert.

Under Qiu Mingxu's design, this huge underground world will no longer be just a pure underground industrial kingdom in the future.

At present, flowers and trees have been planted in this space, and with the central air conditioning and integrated air purification system, the comfort of the underground world will reach a level that is very suitable for human habitation.

It will even be better than the earth's environment, which has been heavily polluted on the ground, and rebuild a complete ecological circulation system in the underground world.

In addition, everything here is completely enclosed from the outside, and if necessary in the future, people can be more strictly controlled.

Although the current underground world is not even a prototype, Cai Ruichen often comes in to take a look.

At present, the largest number of industrial clusters in the underground world are set up in various production lines, neatly arranged in the underground space.

All around, there are various machine stewards, cleaning the underground space that has been expanded today.

Cai Ruichen, who entered the underground space, walked straight towards the nearest row of 3D printers.

Although these 3D printers are exactly the same as the 3D molding equipment in the tank factory, these are not the equipment of the vehicle factory production line, but the equipment factory.

The chariot factory produces Red Alert weapons, the equipment factory produces those civilian or dual-use engineering vehicles or other vehicles, and there is also a primary arsenal next to it, which is used to produce weapons and ammunition.

These three production lines are the main body that constitutes this underground world today, and they are also the backing for all the development of the Red Guard Corps.

At the equipment plant, all kinds of trucks are currently being produced at full speed, with the largest number of heavy-duty trucks.

All kinds of truck parts molded by 3D laser body molding were sent to the assembly plant on the ground for the first time, that is, the factory picture interviewed by the outside world.

Separating the production line from the core 3D laser body shaping is naturally for the sake of confidentiality.

Cai Ruichen intends to open some factory production lines, just for the necessary publicity, to tell the world that the advanced robot production line owned by the Future Technology Group is not to show everything.

At least the reporters saw that it was only the parts that were assembled into trucks on the production line.

The real core technology cannot be opened to the outside world.

Therefore, at present, many people are speculating about where the industrial raw materials of the future technology group are obtained.

After all, the production of any product is closely related to raw materials.

However, none of the world's raw material suppliers have any cooperation with Future Technology Group.

If Future Technology Group has its own raw material processing system, what about the elements used to produce materials?

You can't just make it up in a vacuum.

It's just that for such curiosity from the outside world, it is impossible for Future Technology Group to give an explanation.

Maybe one day, when the ore refinery is not a secret, the answer will really appear. (To be continued.) )