The sound of the ion engine is very unique, especially when its sound waves spread in the water, and if it is not treated with special sound insulation, it will definitely damage the human body.

Because this thing will emit a large amount of infrasound waves in the water, infrasound waves are inaudible to the human body, but they can cause serious damage to the human body.

"Master, this underwater route to the South Pacific Ocean has a small underwater signal transmitter every kilometer underwater,

This kind of signal transmitter emits an electromagnetic wave that can travel through seawater, but the power of this signal transmitter is very amazing.

The daily power consumption of a signal transmitter is equivalent to the power generation of a conventional thermal power plant.

Therefore, the solution we adopt is to regularly replace the battery in the signal transmitter, so as to ensure that the communication on the entire route is normal.

I can also remotely control a large number of robots under the South China Sea and as far as the South Pacific Ocean in Datang Heavy Industries. ”

At this time, the voice of the origin also sounded in Ye Fan's mind, and after Ye Fan heard it, he also nodded.

At this time, the submarine launched a high-power searchlight underwater, and when this searchlight was on the ground, it was basically a small "moving sun".

However, in the deep sea, due to the influence of refraction and other effects, the range that this searchlight can illuminate is less than 100 meters.

Therefore, Ye Fan's submarine is mainly observed through sonar devices, which can detect terrain as far as two kilometers away.

After swimming all the way to the submarine's control center, which is the middle of the submarine, you can see a huge fiber optic cable with a diameter of three meters on the bottom of the sea through its screen.

This is the same level of optical cable as the so-called "cross-sea optical cable", and it is also the best guarantee for the control of a bunch of robots in the South Pacific Ocean.

Sailing in such a deep seabed, the speed can be maintained at more than 100 knots, which can be said to show the strength of Datang Technology to the fullest.

The submarine sailed all the way in the deep sea, and even took advantage of the currents in the ocean many times to go down, reaching speeds of more than 300 knots 80% of the time.

Even against the current, the minimum speed is maintained at more than 100 knots, of course, against the current, the speed does not dare to drive too fast, otherwise it will be a big loss to disintegrate.

Ye Fan's set of steel armor can reach a maximum depth of 3,200 meters, can resist the severe cold of minus 178 degrees, and can provide air for 3 days inside the steel armor in an extremely harsh environment.

Even the ion engine on this set of steel armor can fly for a day and a night when it is turned on at full power, and if it is turned on at half power, or even if it is maintained at one-tenth of the power as it is now, ten days of endurance is not a problem.

After about three and a half hours, the submarine finally came to the depths of the South Pacific Ocean, where Ye Fan saw a large floating city that was being built.

It's just that now the city was built in the sea, and there is not a single place in its interior where there is air, and everything is filled with seawater.

All kinds of cables and lines are exposed to seawater, but Ye Fan is not worried that these lines will be corroded by seawater.

Because the exposed parts of these wires have all been waterproofed, waiting for the next batch of parts to be delivered, and then the wires will be connected. fervor

The bottom of the South Pacific Ocean is 2,300 meters deep, which is already a so-called "shallow water" compared to other seas.

Because it used to be a seabed, it is still relatively shallow and has a hard ground, making it suitable for building large buildings.

Because of the intelligent robots, it was impossible to build buildings in this place in the past, and even laying cross-sea fiber optic cables would not start such a huge project.

The area of the preliminary project is about 100,000 square meters, and the pouring of the foundation has been completed, which consumes very terrifying ore raw materials.

This is also the reason why Datang Heavy Industries began a nationwide large-scale procurement of ore, and even excavated three large iron ore veins in the tunnel into the sea, barely able to support the consumption of ore.

Moreover, the purpose of Ye Fan's plan to open a mining company in Africa is also to collect a large amount of ore in that resource-rich land, and finally smelt it on the spot and transport the liquid metal back to China.

Because of the inherent properties of liquid metal, it only needs to be energized to maintain its metal properties, which also makes it very easy to form.

There is no need for such complicated tempering and other processes, only the molten metal needs to be poured into the corresponding mold and then the power supply can be turned on.

If two pieces of liquid metal that have been energized touch each other, they can be directly integrated, and there is no need for troublesome steps such as traditional welding, otherwise it would be impossible to complete such a huge project in a short period of time.

Because Datang Technology already has three nuclear reactors internally, coupled with sufficient resources, Datang Heavy Industries can continue to produce super batteries.

So there is no shortage of energy.

Next to the foundation of the initial project, sixteen huge iron boxes twenty meters high, thirty meters wide, and sixty meters long were placed.

Although these iron boxes do not look good in the water, if they are moved to land, each giant iron box is the size of a small commercial house.

The inside of the iron box is filled with all kinds of batteries that have been fully charged, and each huge battery pile can ensure all the power supply from the start to the completion of the initial project.

As for the other fifteen-seat giant batteries, except for the three seats that are open to charge the intelligent robot, the other twelve giant batteries are all spare.

In order to prevent the battery that charged the initial project from dissolving the liquid metal caused by an accident, the backup energy source can be switched at the first time.

After all, the environment under the sea can be said to be much worse than the land environment, and everything must be left in one hand, otherwise it will not work.

In the center of the initial project, there is a huge circular pit with a radius of 80 meters, and this pit is to be equipped with an anti-gravity engine.

Anti-gravity engines don't need to have huge exhaust vents like traditional engines, and even if they are installed inside a building, they can be floated directly into the air when the engine is started.

The initial project was to install an anti-gravity engine, and then start the anti-gravity engine to float away from the seabed and float to a depth of 1,200 meters for the installation of the extension project.

At that time, the water depth of 1,200 meters will not be as great as that of the seabed, and further engineering will be carried out at that time, and the time can be shortened to the greatest extent.