Don't talk about martial arts, I'm a war contractor

Chapter 581 Extra: Twenty Years Later
In the deep seabed behind him, a submarine with a very sci-fi shape moved forward silently until a "sarcophagus" appeared on the seabed.

"Dip~dip~dip~~"

The radiation level in the nearby seawater was detected to be off the charts, and the detectors integrated on the submarine started to alarm frantically.

"10 times?"

Xia Yu, who is in semi-retirement, strokes his beard.

Having already achieved success, he now has plenty of time to devote to his own interests, such as the subspace salvage of shipwrecks.

This time, Xia Yu's target was a titanium alloy submarine with the hull number K-278 in the waters near Nowei.

To be more precise, it was the liquid metal coolant reactor inside the submarine that had been leaking.

Protecting the earth is everyone’s responsibility!

When it comes to earthly matters, he only has a say in Afika.

But the entire seabed is under his control.

【Project: Комсомолец】

[Completeness: 62.7% (can be repaired)]

The robotic arm was ejected to hook the gap in the K-278 hull that was sealed with concrete, and Xia Yu opened the system interface.

After an upgrade several years ago, the maintenance requirements for the used vehicle system have been reduced to only 50% completeness.

This greatly facilitated his preparation and repair of some orphan vehicles.

For a submarine like the Type 658, the former Soviet Union only built one, and it sank before it disintegrated. So many buffs were stacked together.

If it was the original version of the system, even if Xia Yu had obtained the K-278 when he was young, he would not have been able to maintain it.

As for now:

"Get ready!"

After identifying the power system, he directly chose to overhaul it.

Of course, there are also two "yellow and scattered" testicles, which is also one of the sources of such high radiation levels on the seabed.

[Estimated remaining maintenance hours: 47.8]

Two days is not a long time. It took five days at the beginning before the upgrade.

Back in the audio-visual entertainment room in the middle and rear section of the third-generation Nautilus, Xia Yu chose an old movie to pass the time.

The new pure electric propulsion submarine, also made of titanium alloy, has much more powerful functions than the previous two generations of exploration boats, especially the communication system.

Even if he is more than 1000 meters under the sea, his wife, children and employees can find him.

Before the movie was over, a holographic image was projected in the corner.

It was Liv calling.

"Where have you been hiding, old man? The kids are all looking for me, asking for their grandpa."

In the projection, Liv was holding Xia De’s two twin sons and Xia Yu and complained.

Xiao Youzi got married earlier than himself and became a father in his twenties.

Compared to the strict grandma, the boys like the grandpa who buys everything for them more. But the grandpa is rarely seen, so they always ask grandma where he is.

"I'm busy now. Grandpa will be back in two days!"

Xia Yu pretended to be working.

The grandfather of the new era will not indulge in love affairs. The construction of his bunker urgently needs reactor energy.

We can't go back until this molten metal coolant reactor is prepared and dismantled.

The design architecture of the previous world is a bit old, and it needs to be upgraded after system deduction before it can be used. This is also a new function after the system is updated. Xia Yu has done a lot of interesting projects with it.

For example, the reactor was completely dismantled and disassembled two days later, leaving the seabed and returning to the surface.

"Shua~~"

A barge appeared out of nowhere, and he jumped directly into the flat-bottomed cabin and climbed into a fighter jet that looked a bit like an F-35B!
In other words, this is the vertical drop version of Feidian that has been upgraded through systematic deduction.

In the past two decades, many F-35A, F-35B, and F-35C aircraft have crashed around the world. Xia Yu not only has a complete series, but also has innovated and created a new version that even the Chinese don't have.

For example, better radar stealth capabilities, new optical stealth, and intelligent AI flight control.

Vertical takeoff and landing are complex and delicate operations, and manual intervention is inefficient and prone to problems. If it is handed over to AI, it will be less likely to crash into the sea.

"Om~~"

The lift fan is turned on, and the modified single-engine high-thrust nozzle rotates downward.

The fighter jet, covered with some kind of coating, flashed and disappeared from sight, and even the new generation of synthetic aperture radar could not track it.

"Boom~~"

A sonic boom cloud suddenly appeared in the empty air.

Xia Yu flew back to Xifei from Northern Europe at a maximum speed of Mach 2.2 until he landed at the cave base.

He took the elevator and went down, and found a large space under the rock a thousand meters deep, which he used to build a bunker.

As soon as the elevator door opened, countless huge objects were placed in the wide space formed by the underground fault.

Xia Yu originally planned to build a Guixu in the South China Sea, but the cave branch base gave him a surprise.

The huge underground space can completely accommodate those naval monsters, so there is also the world's only amphibious underground museum for sea, land and air.

The most shocking of these are the aircraft carriers, battleships, cruisers, destroyers and submarines in the navy pit.

They were divided by country, species, and generation. How did so many giant creatures, hundreds of meters long, dozens of meters wide and high, get into this confined underground space?

If it is discovered by future humans, it will surely become an unsolved mystery that shocks the world.

The subspace folding technology used in the system berth should not appear in this era, but as long as time can move forward, there must be a higher-level civilization that can make it go backwards.

Unfortunately, Xia Yu could not see that era. The farthest he flew around the moon was a few years ago on the rebuilt Little Bird (only the shell was retained).

This is still far from the technology that only exists in science fiction works, but Xia Yu has no regrets because his first half of life was wonderful enough.

What we need to do next is to live the remaining fifty years wonderfully.

Sitting in the maglev car, Xia Yu went from the Navy Pit all the way through the Army Pit and the Air Force Pit until he came to a thick layer of ultra-high temperature resistant glass curtain wall.

Behind the wall is a bubbling lava lake, and the geothermal resources here are more enduring than nuclear reactors.

After completing the final construction work, Xia Yu will use the most advanced technology on earth to build a geothermal energy system that can operate for hundreds of years or even years to power the bunker.

Everyone desires to be immortal, either through metaphysics and cultivation, or through science to achieve eternal life.

It is definitely impossible to become an earth immortal nowadays, but the development of science will never end.

He hopes that hundreds of years from now, humans will be able to successfully overcome the problem of cell division and protect telomeres from being damaged and shortened.

A hundred years is too short, life should be of a longer scale.

For this reason, Xia Yu will donate half of his net worth before his death to set up a foundation to explore related topics.

Stepping into the (temporary) energy supply layer at the bottom of the bunker, he placed the newly repaired and refueled reactor into the space that had been planned in advance.

At this point, only 35% of Xia Yu’s bunker had been built.

He still had fifty years to complete the rest of the project, but now as a grandfather he had to go home.

(End of this chapter)