The thickness of the steel gate is far beyond everyone's imagination. A steel gate with a thickness of nearly one meter is even a tank that can't be opened at a close range.

But this is not a place that amazes everyone. The scorching sun occupies everyone's sight, it is the scene seen through the thick glass observation window.

A group of scientists in white coats walked in a hurry in the corridor, recording various data information, and Wang Bingbing, who had no concern about entering.

Wang Bingbing seemed to have been here once and had been accustomed to it. She called the cameraman to avoid these scientists and came to the glass window, allowing people to see the "sun" inside through the glass window.

In a literal sense, if a real sun is not a characteristic glass that blocks most of the light and radiation emitted by the "sun", it is afraid that most people will not have gasified it on the spot.

Some people who have understood this or even heard of something have a noun in their minds. They just feel a little dry and want to speak but can't say that.

At this time, Wang Bingbing softly answered the people in front of the TV, directly confirming their guesses.

"The revolution in the energy field, an important symbol of mankind's entry into the next era, is the nearly eternal energy "controllable nuclear fusion", which is what you commonly call the "little sun".

Now, Lin Shucheng and most of the audience in front of the TV stopped in an instant, followed by indescribable excitement, a sense of pride for the country spread from the inside out.

Even the calm Lin Shucheng wanted to stand up and shout loudly: "Beichen is awesome!!"

Compared with heavy nuclear fusion, the small sun belongs to light fusion, and the fuel consumed is deuterium (a isotope of hydrogen). The deuterium content in seawater is very high, even if there is one deuterium atom in every 6,420 hydrogen atoms.

There are about 13.22 billion tons of seawater on the earth, that is, (40 trillion tons) of deuterium.

Without thinking about the energy conversion efficiency, so much deuterium can actually generate kilowatt-hours (900 billion kWh) of energy.

The global energy consumption in 2015 given by the IEA is about 21699 billion kilowatts. At this consumption rate, the deuterium on the earth is enough for humans to spend 90 billion years.

Judging from the fuel storage alone, controlled nuclear fusion can indeed be regarded as a nearly infinite power.

Although the planet's resources are huge, they are limited in the end. If a civilization wants to survive for a longer period of time, it must obtain the ability to sail interstellarly before the planet's resources are consumed and have the ability to develop other interstellar resources.

But the premise of interstellar navigation is energy.

Thermal fusion means that humans have broken through the most important step in interstellar navigation: the energy problem; it means that human civilization has the possibility of becoming an interstellar civilization.

This is an epoch-making technology, which represents the entry of mankind into a new era!

Of course, people of this era are very close to controlled nuclear fusion technology, and may be able to be completed in another thirty or forty years, and the technology provided by the Immortal Bird is just a shortcut.

Of course, so far, there is another difficulty they need to overcome, which is to win the Battle of the Abyss.

After a brief excitement, people obviously realized this problem and turned their attention to the TV. Wang Bingbing, who had already boarded the sightseeing bus at some point when she looked at the screen.

Beichenfang did not want to make the process of announcing part of the Great Wall this time too serious. People's moods themselves are too depressed, so the hosts of CCTV are actually not very suitable.

This is also the reason why they chose her. This host has a natural affinity, which makes people feel like they really follow her to visit.

"In fact, in the Great Wall plan, two more thermonuclear fusion reactors will be made as energy sources for the entire underground Great Wall veins.

With these three reactors, we can spend this winter safely while taking refuge in the Great Wall. You must know that the temperature emitted by the reactor alone is 100 million degrees." Wang Bingbing also joked here.

"The heating, food storage and cooking, lighting and some necessary internal weapon systems are basically not to worry about energy at all."

Although I knew in my heart that such a huge dungeon would not be a day to build, Lin Shucheng thought to himself as the sightseeing car gradually moved forward.

Soon, the vehicle stopped in front of a door again, and people quickly threw the messy thoughts behind their minds. At the beginning, it was such a big news about the thermonuclear fusion reactor. People had infinite anticipation for what Wang Bingbing brought them this time.

Wang Bingbing slowly walked to the door, and gently brushed it with the door card hanging on her chest, and with a drip, the door slowly opened.

The next scene made everyone's eyes widen.

Lin Shucheng frowned even more: "Is this... coming out?"

They followed Wang Bingbing and entered the door together. They stood in a corridor dozens of meters high, and below was a pasture.

On the lush and gentle meadow, tens of thousands of cattle and sheep were grazeing with their heads down, and some staff were watering the turf with water pipes.

The water flow emits a crystal light under the sunlight.

Yes, it’s the sunshine. Above them is a white cloud and blue sky, and the grassland is endless and boundless. People who don’t know think they have come to the Mongolian Plateau.

Wang Bingbing smiled mysteriously: "This is a small world created by our Beichen Kingdom."

“???”

Everyone looked confused.

"If you don't believe it, let me control the sun to set." Wang Bingbing said seriously, and then she gestured to a corner that the camera could not capture.

Then he walked up to the grassland below and shouted: "Sunset!"

Under the shocked eyes of people in front of the TV, I saw that the sun in the sky was actually slowly setting, hanging on the hill not far away, and the golden sunlight shone on the white clouds like gold.

"Good guy!"

Lin Shucheng in front of the TV was so shocked that he stood up from his seat.

Including the rest, they were also confused, but some people seemed to have thought of something, and Wang Bingbing's words later verified her guess.

"Okay, I won't tease you anymore. This is actually the holographic projection technology from the Immortal Bird Company. Not only the sunset, but also the daytime, this technology can also simulate the four seasons of night and spring, summer, autumn and winter."

As she spoke, the grassland also began to change with her words, as time accelerated, from sunset to night, the sky was full of stars, and the bright moonlight illuminated the earth, and then the galaxy surging, dawn rose, and the sun rose again from the hills in the distance.

Even the cattle and sheep on the grassland were frightened by this scene and became a little anxious.

But the next second, the blue sky and white clouds disappeared without a trace, replaced by a huge metal dome, with a huge incandescent lamp illuminating the earth above.

The grassland below is no longer endless, but is a limited area, but cattle, sheep and turf are real.

"The incandescent lamp above our heads, also known as the sunlight, can replace the sun to supply this farm grassland for photosynthesis, and can also give organisms the required sunlight."

“In the entire Great Wall planning, we intend to set up a park like this in every accommodation area to allow people who live underground for a long time to get the necessary sunlight.”

In fact, even after the war, the underground veins of the Great Wall are not useless. Transportation, housing, tourism, or conversion into various hotels and specialty restaurants are all possible.

The underground veins of the Great Wall can not only become a hiding point in wartime, but also solve the growing housing problems of Beichen Kingdom and significantly reduce housing prices.

As long as they survive the impact of the abyss, the Great Wall will be another starting point for Beichen’s rise!

Of course, the Great Wall now only exists in the concept, and Wang Bingbing never said that the Great Wall was built before.

In just half a year, how could such a huge underground vein be established on most of the Asian continent? Even with the support of prior technology, it is impossible.

The Great Wall at this moment is only one-quarter of the size, but the underground Great Wall will also start construction at the same time during the Battle of the Abyss. As long as the front line is guarded, it will only be a matter of time before it is completed.

Next, Wang Bingbing took the cameraman to visit the accommodation area, which is a simple dormitory of ten people. It is worth mentioning that it is also equipped with a sales point for virtual helmets, and there is also an Internet interface for virtual helmets in the dormitory. If people are really tired of staying in this underground Great Wall, they can also go to the City of Bliss through the virtual helmets to vent.

While ensuring safety and efficiency, Beichen and Immortal Birds have improved the quality of life of the people underground to the extreme.

Wang Bingbing walked out of the dormitory area and returned to the wide corridor.

In fact, the corridor is so wide and not designed in vain. It is for the purpose of being used as a transportation hub for this dungeon in the future, and now it is for the purpose of being used as a traffic lane for urban surprise attacks during wartime. In the future, tanks will really be used here.

"In fact, there are far more than this one ranch inside the Great Wall, as well as various pig farms of all sizes.

In addition, we also planted rice, wheat, and various vegetables, fruits and melons in the Great Wall, and basically achieved considerable gains. There is even a huge aquatic circulation device in the next floor of the Great Wall.

If the Great Wall is completed, it will provide more than one billion people with a certain degree of self-sufficiency in living underground."

Wang Bingbing sat on the corridor and said very seriously.

"After seeing the livelihood devices in the Great Wall, I think everyone should be very concerned about the defense capabilities of the Great Wall and whether the monsters in the abyss will break through and attack the Great Wall.

Regarding this, everyone is completely relaxed.

The main structure of the Great Wall is several hundred meters underground, with a thick layer of steel and cement above it, and even the impact of a nuclear bomb cannot affect it.

At the same time, several important entrances are eighteen-layer stage-type gates used, each of which is solid special metal alloy steel, and it is quite difficult to bombard the 800mm Gustav gun.

And, please don't forget..."

Wang Bingbing turned her head, and the smile on her face became serious and serious.

"On the ground, there are tens of millions of people's soldiers fighting bloody battles for Beichen and humans. We have the most powerful army and the most advanced weapons. Even if our army fails, we have 2,500 nuclear warheads and the most proud space-based kinetic satellites in Beichen!"

She stared at the camera with a serious expression.

"Maybe we will live underground for a long time in the future, but the ground will definitely not be their world!"

...

"The ground will never be their world!"

This sentence echoed in Lin Shucheng's mind, and a warm current rushed straight from his tailbone to his forehead. It was his long-lost passionate blood. Perhaps the future situation that Wang Bingbing said might be very serious, but this sentence also completely hit his g-spot.

The determination to never surrender to the monsters in the abyss was already conveyed to everyone in Beichen Kingdom through the host's words.

They did not tell Beichen whether they were sure to win the war. What they told the people of Beichen was that Beichen was sure to protect the lives of most people.
Chapter completed!