At this time, the picture that appeared on the projection was an endless underwater giant city!

The giant city under the sea was lying quietly at the bottom of the sea, and the surrounding aquatic plants were suppressed by the giant city.

Moreover, the 10,000-meter seabed, which was supposed to be dim and lightless, was now brightly lit and incomparably bright, as if there was an artificial sun shining.

Seeing the bright underwater world, everyone's eyes showed deep shock and amazement.

They had never seen this kind of scene before, because the submarines they built only dived to a depth of several thousand meters at most, and there was still a certain distance from 10,000 meters.

And at a depth of thousands of meters, it is extremely dim, and although there are searchlights, the light is limited after all.

But now, the underwater city seems to be a sun that radiates thousands of rays, lighting up all the dim 10,000-meter seabed around it!

Through these lights, everyone can see that there are some machines on the bottom of the sea, which are intelligently removing seagrass near the underwater city, as well as some large sea creatures.

After all, the ocean is very mysterious, and almost all of the oldest species of life on Earth are in the deep sea.

So those creatures need to be expelled, and the underwater city has adopted an automatic system, automatically dispatched these machines, and cleared out the absolute security area of several nautical miles near the underwater city.

Next, they saw that there was a protective shield over the underwater city, which seemed to be made of a special transparent material.

It was a material that could keep the sea out and unleash the light emitted by the underwater city.

They could clearly see that the inside of the underwater city was actually not submerged by the sea, and the sea water was all blocked by the protective shield.

"Hiss......"

Seeing this scene, almost everyone couldn't help but gasp, and their eyes were full of deep shock.

"How is that possible? What kind of material can withstand such a huge pressure!"

An expert in physics couldn't help but exclaim.

"10,000 meters deep, coupled with such a large area, this pressure is ......"

One expert tried to do the math, but stopped halfway through.

Because this number is astronomical, they can never imagine that there will be materials that can withstand this kind of pressure.

But now that material is in front of them, whether they believe it or not, the facts are in front of them.

Just when everyone was still immersed in deep shock, the picture on the projection suddenly changed, and then it changed to the perspective of the underwater city, and then the figures of five submarines appeared in the picture.

Seeing this, everyone's eyes lit up, because they found that these five submarines were the same five that had gone up to pick them up just now.

At this time, I saw it in the picture, which naturally means that the five submarines have descended by as much as 10,000 meters in such a short period of time!

Then, they watched intently at the projection, and they wanted to see how those submarines got into the city under the sea!

You must know that the underwater city can be said to be surrounded by seawater, and no matter where there is a little gap, there will be a steady stream of seawater pouring in.

So they wanted to know what kind of measures the underwater city would do to prevent the sea from coming in.

Soon, the five submarines sank to the bottom, and a few wheels were exposed underneath, just as when the planes landed.

The submarine slowly advanced at the bottom of the sea, came to the protective shield, and was about to enter the range of the underwater city.

Little by little, everyone saw that the distance between the submarine and the protective shield was constantly shrinking, until the last zero contact!

However, when the submarine came into contact with the shield, everyone was deeply shocked by what happened.

I saw that when the submarine came into contact with the protective shield, there was no big collision as everyone imagined, but a scene that stunned them.

The submarine was like a sharp sword, directly piercing the protective shield that could withstand the tremendous pressure.

After the stabbing, the shield did not collapse, the sea water did not surge, everything was very calm.

Then, everyone saw that the head of the submarine slowly entered the range of the underwater city, but not a drop of sea water poured into it!

Because, when you see the protective cover, it turns out to be a soft material and a recoverable material.

As the name suggests, these two materials first of all soft materials mean that the material is soft, which is very different from glass.

Secondly, the recoverable material is a new type of material, for example, the prototype of this material is a chopstick-shaped, even if the material is folded into a U-shape, the material can still self-revert into a chopstick-shape.

When these two materials are combined, this unimaginable effect is suddenly achieved.

"No wonder!"

Seeing this scene, those experts immediately reacted, figured out something, couldn't help clapping their hands, and said excitedly.

Through this scene, they figured out a lot of things, including why the shield could withstand the unimaginable pressure.

As the saying goes, in the face of such a terrifying pressure, it is undoubtedly too difficult to resist the pressure with stronger materials, but this underwater city uses soft materials to continuously transfer the huge pressure, and finally to the ground at the bottom of the sea.

But if it's a hard material, then it's directly facing the huge pressure, and I'm afraid I won't be able to hold on for a second.

After this soft material persists, the recoverable material in it begins to play a role again, constantly restoring its previous form, resulting in the soft material has been in a stable state.

"It's a pity that the principle is like this, but it is very difficult to implement this kind of technology. ”

However, although those experts understand the principle, it is still difficult to do it.

First of all, there must be soft materials with such strong toughness, otherwise even soft materials will not be able to withstand such terrifying pressure.

And the restorative material can't do that either, because it needs to be in a steady state at all times.

So although they know this principle, if they want to do it, I am afraid that it is far away.

As for why the submarine was able to cut through the material, it was because the material of the submarine was very sharp and could cut through the material.

Then the softness and recovery of this material can keep the submarine tightly wrapped when it enters, preventing a drop of seawater from entering.

"Tsk, that's ingenious!"

Seeing that the five submarines all entered the range of the underwater city, but did not bring in a drop of seawater, everyone standing on the battleship and watching this scene couldn't help but exclaim.

The third update! Today's update is complete!Ask for a recommendation ticket!Ask for a monthly pass!

(End of chapter)