Mankind has been able to land on the moon and build an International Space Station of more than 400 tons in space!

Vehicles are spread across the entire solar system, and the three Pathfinders and Voyagers are almost out of the solar system!

But for the study of the ground under our feet, it is in a state of "basically guessing"!

You can only rely on the detection of seismic waves to "guess" what the depths of the earth are like.

In the less than 10,000 years of recorded human civilization, the extent of underground activity has almost never exceeded a depth of 3,000 meters.

At the beginning of 2016, several countries launched the "International Ocean Discovery Program", drilling a 1,500-meter deep well in the eastern Pacific Ocean for the first time, which became the deepest record for the earth's exploration of the earth.

But even then, drilling is still 3.5 km away from the Mokhorovich discontinuity.

It is said that when the well was dug at that time, many people came to protest, fearing that they had dug a hole in the earth and caused the end of the world.

Jiayu saw the news on TV at the time and said a word.

"Idle eggs hurt ......"

Unexpectedly, two years later, he came to a place more than ten times deeper than that deep well!

Also here, see a magical building that is clearly a prehistoric civilization.

……

In addition to the fact that the ground is difficult to dig, the temperature is also an unsolvable problem.

Dig a hole deep underground, and for every 1 kilometer you go deeper, the temperature will increase by 33 degrees!

Liu Moxi and his team dug 18 kilometers underground, and the temperature had reached 720 degrees Celsius.

At this temperature, the ingots melt into molten aluminum, and the iron tools have turned into a soft dough.

Without a professional cooling device and the powerful ability of an evolutionary, it would be almost impossible for ordinary people to dig so deep.

The "Mokhorovich discontinuity" is a place that humans have never set foot in, and it is only a speculation of scientists, because after this discontinuity, the conduction speed of seismic waves will suddenly increase!

After this discontinuum, the explorer will enter the mantle!

The rocks in the mantle are much harder and denser than the earth's crust, which leads to the acceleration of seismic wave conduction.

The ruins of civilization built here have far surpassed the technological level of existing human civilizations!

……

It is said that the scientific researchers of the base searched the energy station, the only area allowed to enter, for two months, and were unable to find any written records here.

They refer to the prehistoric civilization that built the underground power station as "ancient people."

The "ancients" did not know how to get in and out of the energy station.

And they, the human latecomers, can only rely on a little bit of holes, dig to the top of the cave sky, pull the incomparably long rope ladder, and then slide down into the building.

The combat team consisted of only 17 people, all of whom were resident panda guards in the zoo, and there were no more combatants.

Except for Shanwu, Queen Wang Xiaoli and Xiao Jiajia, the others Jiayu don't know each other.

The mountain woman carefully put away the pale yellow dress and changed into a lean combat uniform.

By the time the team reached the top of the cave, the rope ladder was gone!

A few hundred meters of the earth's mantle, the scorching reddish-yellow light emitted by the tumbling magma, and countless diamonds, rubies, and sapphires on the roof of the cave...... The refracted colorful and brilliant light reflects this huge underground space like a dream!

Under the entrance of the cave is a few hundred meters in the air, if you jump from the dome, you will not have the ability to fly, and any evolutionary will be the result of death!

However, she was prepared, and she found spare rope ladders from the huge backpacks of several deputies, and connected them one by one.

Hung down.

……

Xiao Jiajia, the strongest doll on the earth, babble, and wanted to fly down by herself, but Jiayu didn't dare to agree.

Jiayu grabbed the noisy bear child, asked the mountain woman for a safety rope, dismantled a backpack, put the doll in it, wrapped it with a safety rope, and tied the doll with a rope to his chest.

Xiao Jiajia wanted to struggle, but Jiayu persuaded her.

The doll was very upset and looked out angrily.

After taking a few looks, Xiao Jiajia hugged Jiayu, "It's terrible, it's terrible!"

The little doll, who is not afraid of heaven and earth, feels that this mysterious building seems to have a kind of shielding power, and she can no longer fly!

Jiayu takes the lead and slides down the rope ladder.

The gap from the top of the cave to the huge area in the ground has a height of almost a kilometer.

In the space 20,000 meters underground, the temperature in the air is constant at 890 degrees Celsius, and if the normal temperature growth rate is followed, this position can reach the super high temperature of the sun's core!

During the whole descent process, Jiayu did not feel any wind flowing.

He saw clumps of hot gas rising from the magma, carrying with them a large amount of steam of methane, ethanol, metals, and ore components!

But when the steam rose to the level of the ancient people's huge energy station, it disappeared in an instant!

The baby is very happy, this kind of temperature that can steam people to death in an instant, Xiao Jiajia didn't care at all, opened her fat arms, and happily followed Jiayu's whereabouts.

Looking at this magnificent prehistoric civilization building from the air, Jiayu can still maintain a detached posture, as if he is traveling, just watch a boom!

But in the process of gradually falling, the split building with three huge metal rings becomes clearer and clearer, and the shock with the individual becomes stronger and stronger!

This mysterious civilization creation is like a huge plate, and the front part facing the surface is relatively flat, Jiayu silently calculated, it is estimated that it is as big as a small city!

It's even bigger than the previous Qingcheng area!

On the round "plate", there are five "petal" energy shields distributed in the shape of plum blossoms, one of which has disappeared into a dark gap.

In the middle of the "plate" is a huge energy shield, and Jiayu can't see anything inside.

The only place where the shield disappeared was the only place where the shield had landed, directly above the tunnel at the top of the cave.

This is this huge prehistoric ruin, the only area that the base can master!

This small component alone has a diameter of more than 600 meters and an area of more than 1.13 million square meters.

Holding Xiao Jiajia, Jiayu landed firmly on the ground.

Jiayu found a fixed point and bolted the rope ladder firmly to prevent the rope ladder from shaking.

Shan Wu said that while exploring, an earthquake of moderate intensity caused the ladder to sway violently, and one of the evolutionaries crashed into the protective shield next to it, and was instantly burned into ashes.

Xiao Jiajia wanted to fly and run by herself, but Jiayu still didn't dare to agree.

This place is so spooky!

On the way down, Jiayu saw countless scattered high-rise buildings in the huge building.

But after it really fell to the ground, the high-rise buildings they saw in the distance were actually countless cylinders, cuboids, and spheres of different sizes and styles......

The mountain woman also fell to the ground in fright, her face was pale, and she had no iceberg temperament.

It's the first time Jiayu has seen such an expression from Shanyu!

After relieving for a while, Shan Wu glared at Jiayu and said, "I'm afraid of heights, you shut up." ”

Jiayu almost burst out laughing.

……

Countless models, arranged in a haphazard manner in a huge space!

The cylinder is more than ten meters high, which is the height of a three-story building.

The thickest one has a diameter of 6 meters, and the thinnest one has three meters.

The cube landed squarely on the ground, reflecting the light from the outside.

Jiayu even saw an inverted pyramid with straight lines and intact.

It's like a giant family child playing with blocks, playing and playing unhappy, slapping the table and running away, leaving huge squares, columns, and trapezoidal blocks, messily scattered in this space.

A cube the size of an ordinary residential building, even if it is supported by steel, Liu Moxi, a strong female ambulance, can move it with force.

But the squares and cylinders in the space don't know what material they are made of, and Liu Moxi can't shake them.

Later, after the scientific evolutionaries were stationed, after simple measurements, it was found that almost all of these cubes and cylinders were processed to the limit, without a micron deviation!

The cube is a standard 90-degree right angle, and the cylinder is the most standard circular cylinder.

Even the atoms on the surface are extremely straight.

There is currently no other country on the planet that can process with such high precision.

……

The countless gems on the dome refract and reflected the scorching red light of the mantle magma, making the interior of the ancient building as bright as day, and the road could be seen clearly.

After all 17 fighters landed, Shan Wu led the way and galloped towards the energy control center, after so much time, they didn't know if they could still resist the attack of the Two-Headed Eagle Empire rebels.

After walking a long way, corpses began to appear on the ground, but there were no energy fluctuations, and the battle was long over.

Jiayu found something strange, the guards guarding the energy station seemed to be killed with one move without resistance!

Could it be that there are some super masters in the rebel ranks?

They entered a combat state, weapons in their hands, and quickly marched towards the control center not far away.

Deep underground, the light emitted by the magma was tightly blocked by the heavy energy station, and then the surrounding light reflected off the massive rock walls, bringing a glimmer of light to the dark corner of the energy station.

A group of 17 evolutionaries marched in battle formation.

Two strikers lead the way, while the scout is tasked and the others are at arm's length.

The members of the home team, each with a distance of about 3 meters, form a loose battle group, so that any unexpected events are left with enough time to react.

At a depth of 20,000 meters, toxic gases, excessive high-energy radiation and high temperatures of nearly 1,000 degrees Celsius are permeated.

Although Shan Wu has successfully evolved to the third layer of the microscopic level, the quantum layer, in this extremely harsh environment, she still feels a little reluctant with a human radar.

The other 14 Militant Evolutionaries, most of them are the second layer of the microscopic level, the atomic plane.

In order to resist all kinds of harmful substances, everyone pushed their energy field to the strongest, and almost everyone was shrouded in an oval-shaped eggshell.

When she was young, she watched her father play games, and on the computer screen, there were countless two-dimensional villains, dressed in gorgeous costumes.

As soon as the villain opened the shield, it was an oval-shaped light mask, similar to the energy field of everyone now.

In the process of evolution, each evolutionary will be accompanied by their own unique energy field.

The field is made up of lines, for example, the magnetic field is composed of countless magnetic field lines, and the magnetic field lines cannot be seen, only by putting a little iron powder on the paper and patting and patting, you can see the magnetic field lines in circles one by one.

The same is true of the evolutionary energy field, which is invisible on weekdays, and only when resisting harmful substances, the fierce confrontation between the external high-energy particles and the energy lines at the atomic level will make everyone's energy field manifest.

The mountain's eyes were fixed on Jiayu again.

This time Jiayu suddenly woke up, and Shanyu found that his whole person seemed to be different.

The energy field is also completely different from other evolutionaries.

Everyone else is an egg-shaped energy field, but Jiayu has not changed at all, and is still running wildly, like jogging on the field road before the apocalyptic disaster.

There is not a trace of panic in the underground struggle to survive!

If it weren't for the fact that there was an extremely postmodern style sword on his shoulder, then Jiayu, who was wearing a black leather coat and leather pants, would hide in the darkness and no one could see it.

……

The mountain maid stared around, Jiayu didn't care at all, and there were more and more questions in his heart.

Along the way, he felt that Zaryanov seemed to be very familiar with the route here, and did not take a detour.

The guard arranged by the base, he is Men'erqing, and the base guard does not have any chance to resist.

It's certain that there are traitors, but the rebels themselves are also quite tough!

Jiayu had a hint of foreboding.