Yang Guang had an illusion and suspected that he had not rotated 180° just now, otherwise......

He immediately guessed another possibility, the current situation was probably similar to the situation in the centrifugal gravity ball.

When I was in the centrifugal ball, due to the effect of centrifugal gravity, I didn't have any sense of handstand when my head was rushing down.

After walking out of this "upside-down" elevator hall, there is another "upside-down" large building outside.

Yang Guang felt that there was no need for him to worry about whether these buildings were upside down.

Whether they stand upside down or stand upright is actually determined by their own subjective consciousness, and now from the point of view, these buildings are normal for them.

In this building, after another round of rigorous inspections and various check-in formalities, they received a small flying machine.

As soon as the aircraft flew out of the open gap in the top of the building, Yang Guang immediately saw a scene that he would never forget in his life.

It's a world that looks like the ground, with vast plains and tall mountains...... The vast ocean can be seen faintly in the distance.

But when Yang Guang looked up, he found that this world was the biggest difference from the surface world.

I saw that in the "sky", a huge red ball was turning seemingly slowly.

And around this huge ball, there are rings that rotate around it, making this huge red ball look very strange.

The world also has a thick atmosphere, except that all the clouds are reflected red by the huge red ball.

Yang Guang was dumbfounded.

In the depths of the earth, there is such a magical underground world.

"This red sphere, which is the core of the Earth, is not much smaller than Mars, but it is less than 2,000 kilometers away, so it looks so big. ”

Zhang Jin on the side explained to Yang Guang, who looked stupid.

She looked at Yang Guang's expression, and also remembered the surprised state she was when she first came to this underground world, and couldn't help but smile.

Yang Guang couldn't help but exclaim in his heart: "I'm a good girl, two thousand kilometers ......"

It turns out that there is such a wide space underground, and it is not all magma and rocks, which means that the earth is hollow.

In this huge underground void, there is an environment suitable for living things.

He subconsciously turned on the super energy induction, and found that this was a world full of life, within a radius of nearly three hundred kilometers, Yang Guang not only found a large number of strange animals, but also found that there were also demons here.

Moreover, the density of high-level demons in this underground world is much higher than that on the surface.

Zhang Jin continued: "The sea of this underground world is actually the same as the sea on the surface, and the interior of our earth is not monolithic.

Because of this, the aura can also be absorbed into the earth's core, and the aura of this world is much richer than that of the outside world.

Just look at those big trees, three or four hundred meters tall can only be regarded as average. ”

Zhang Yuanshan added: "Not only is the concentration of aura much higher, but the aura here can also be maintained for a long time, which is probably the key reason why ancient civilizations finally chose to settle in the underground world.

Another reason is probably that it's safer here than outside.

But unfortunately, none of these great human civilizations survived on Earth. ”

When Zhang Yuanshan said this, Yang Guang was very keen to find that the two masters behind him glanced at each other, as if this sentence made them think of something at the same time.

Zhang Yuanshan said: "Look at the rings around the earth's core, that is, the energy devices built by one or many civilizations, these rings can absorb the heat energy and radiation of the earth's core at a very close distance, and convert them into all the energy needed.

And its other function is to create night for this world, and when they unfold, the obscured half of the underground world becomes night. ”

He sighed: "I don't know how many billions of years have passed, and this device can still operate normally and automatically, which shows how great our human civilization was before." ”

Yang Guang nodded when he heard this, this is indeed an incredible project, if these civilizations are still there, what kind of development will they have now.

As they spoke, the aircraft was almost at their destination.

Looking down, there was already a vast ocean below.

The ocean of the underground world is not very deep, and the sea surface looks very calm, and under the action of smooth centrifugal force, the sea surface is as flat as blue glass, without a trace of waves.

Only occasionally you can see some huge whirlpools, forming large and small depressions in this large glass, and in some places you can see undercurrents rushing out of the ocean floor with very high heat.

The aircraft hovered at an altitude of 10,000 meters over a large area of islands and reefs, and Zhang Yuanshan pointed to the hundreds of islands and reefs within tens of kilometers and said to Yang Guang: "Virtuous nephew, you see, these exposed islands and reefs actually belong to the same island.

The island existed more than two billion years ago, and now it has slowly settled due to centrifugal forces and some movement of the earth's mantle.

Your two masters and I have been tracking down for a long time one after another according to the clues, and now the clues have led us to this place.

The relics of the ancient civilization we are looking for are likely buried beneath this island, and the problem now is that we can't be sure exactly where it is.

In such a large area, if you are not sure of the specific location, we can't blindly dig through, so I want to use your sensing ability to find out. ”

"That's ...... so"

Yang Guang breathed a sigh of relief when he heard this, this was a simple job for him.

His current maximum sensing distance has reached more than 150 kilometers, but due to the isolation of soil and rock, the extreme depth of underground energy sensing is about one-tenth, that is, about 15 kilometers.

If the ruins do exist, and they do not exceed a depth of fifteen kilometers, then everything will be fine.

Shi Chong said: "There were originally some demons in this sea area, but we also led them out to deal with them, and now it should be relatively safe."

You can rest assured that you can go down and do things, and Brother Meng and I will also go down to be your bodyguards.

As for Master Jiao and Senior Lin, it is better to help us press the formation on this, and the province will be picked up cheaply by others. ”

Yang Guang didn't sense the existence of any threatening demons in this sea area, but there were two masters who agreed to be bodyguards, and he didn't have to refuse.

"Let's go, let's go down and have a look. Yang Guang stood up.

The aircraft opened the hatch, and Yang Guang flew down from an altitude of 10,000 meters and landed in the most central area of this large area of islands and reefs.