Through the textbooks left by the Atlanteans, Lu Yuan finally had a certain understanding of the Atlanteans.

By the time he finished reading this book, he was already vaguely aware that the appearance of this book would have a huge vibration in the scientific community.

Through this book, Lu Yuan finally knew the true origin of the Atlanteans.

Before the Atlanteans came to the continent, there were some indigenous people in the continent, but they were very uncivilized and were actually in the Stone Age.

It wasn't until 15,000 years ago that an expelled witch came to Daxizhou with his clansmen, and Daxizhou gradually got rid of the wilderness and developed.

This great witch who came to Daxizhou with his people to pioneer was the later sea god Poseidon.

The name Atlantis is really just what later generations call them, and they themselves call themselves Westerners.

Judging from the textbooks, the Atlanteans have long been an independent and technologically advanced civilization.

And they have their own writing and civilization characteristics, but when they are externally influenced by the sea god, they still regard themselves as descendants of Yu Xia.

However, the Yu Xia they refer to is not the later Zhu Xia, in fact, the later Zhu Xia is very different from the Yu Xia Empire.

Judging from the records in the book, when the Great Western Continent sank, the Atlanteans were hit hard.

But with the help of the great witches of the Yu Dynasty, the civilization still continued.

Not only that, but the surviving Atlanteans used their technology to build five cities under the sea.

One of them is the city where I am now, and its name is Vera. It means the city of the sea gods and the first underwater city built by the Atlanteans.

At its peak, the city had a population of 700,000, which was quite good at the time.

The population of the city is not large, but it has absorbed some of the things gained from the first war with outsiders.

After the destruction of the Great Western Continent, their technological level has developed even more.

In the early days of the Second Great War with the Outsiders, they even served as the main force of the interstellar war.

At that time, their ships were spread all over the solar system.

Unfortunately, the good times did not last long, as the war continued, under the lure of outsiders, one of the people of the center of the earth actually betrayed the civilization of the solar system.

Tempted by the outsiders, these betrayed geocentrics raided the city from underground during the battle with the Atlanteans with the main force of the Atlanteans.

Although the city was saved thanks to the timely rescue of the Great Witches, a large number of people died in the war.

By the time the war ended, the population of the entire city was less than 100,000, and the total population of the five undersea cities was less than 600,000.

Not only that, but because of the war, the entire earth and the environment of the entire solar system have been greatly damaged.

Because of the large number of nuclear weapons used by mankind in the war, even the deep-sea world has been severely affected.

At that time, a large number of deformed children appeared, and for the sake of the continuation of the race, the remaining Atlanteans finally responded to the call of the Great Witch and left the solar system together.

Lu Yuan sighed, the book ended when it was written here, but what Lu Yuan wanted to know most was not recorded.

Lu Yuan himself speculated that the Atlanteans and the Great Witch were most likely to go to the Orion Star Field.

However, Lu Yuan's current focus is not on the whereabouts of the Atlanteans, but on the people in the center of the earth mentioned in the book.

The underground people mentioned in the book naturally reminded Lu Yuan of the hollowness theory of the earth proposed by some scientists.

Geophysicists generally agree that the mass of the Earth is 6 trillion (1 trillion = 10000000000 = 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000

However, according to scientists, if the interior of the earth is an entity, then the mass of the earth will be more than that, which is why in the scientific community of the last century, the hypothesis of "the hollowness of the earth" appeared.

Russian physicist Fedor Nivolin is one of the leading scientists who adheres to the "theory of the hollowness of the earth", and he has made a name for himself in the global scientific community for proposing the theory of "new physics".

Nivolin's theory of "new physics" is that our Earth, at the beginning of its formation, was nothing more than a huge mass of ice floating in the universe.

Under the influence of the sun and cosmic energy, it began to heat up and turn into a lava state, and then began to slowly cool again, forming a hard rock layer on the surface of the earth, but the lava under the rock layer still remained boiling, and the magma continued to expand under the heat, forming a gas that spread out of the earth.

After hundreds of millions of years of such expansion and diffusion, the center of the Earth has become in fact a "huge empty shell".

Nivolin believed that the main outlets for the massive spread of gases were at the north and south poles, and that the "huge caves" that can still be clearly seen there are clear geological evidence.

In fact, in addition to the Russian physicist Fedor Nivolin, there are many other scientists who believe in the theory of "the hollowness of the earth".

These scientists believe that there may be a large cavern inside the Earth, and that there may be another star inside.

Some scientists believe that it may have a suitable climate, unique plants and animals, special civilizations, etc.

These are things that may sound incredible, but no one can categorically deny them without conclusive evidence.

Lu Yuan once also talked about the hollowness of the earth for a long time.

For this reason, he has also watched the movie "Inner World" many times.

In the dead of night, he had also imagined what the inner world would look like.

The geocentric people who appeared in the book once again evoked some of Lu Yuan's memories of the past.

Lu Yuan had been frantically searching for information and legends about the inner world back then.

Among them, the most memorable thing for Lu Yuan is "Baird's Diary".

On December 24, 1965, the "Baird Diary" was exposed, recording a retired US Navy rear admiral Baird's adventure with an underground civilization in 1947.

In his diary, Major General Baird mentions that the humans of the underworld oppose the militarization of nuclear technology by above-earth civilizations, because they have experienced first-hand the horrific consequences of the destruction of the world.

In 1947, Baird wrote in his diary that he led an expedition from the North Pole into the interior of the earth, and that he was surprised to see a valley full of green trees and a small stream flowing through it.

This is what the Arctic is supposed to be a world of ice and snow!

Not only that, Baird also discovered a huge UFO base and extinct plants and animals on the ground, and the UFO base is also inhabited by high-tech "supermen".

The mysterious people told him that this underground world was called "Ariani".