Unexpectedly, this world tree not only has a tree house above, but also an underground space?

"This... doesn't seem too surprising." Lou Feier stepped on the ground. "The root system beneath the World Tree is so developed, so it's normal for there to be space underground."

"This is great news." Xu Xin couldn't help but smile. "We didn't have much protection underground, but now, the underground has become our own territory."

The World Tree can even conquer the underground world.

So strong!

"Let's go up and take a look first." Xu Xin thought about it, and immediately felt a push from under his feet.

The entire vine ball began to rise.

Because the vine ball is completely enclosed, several people don't know how fast the vine ball rises, but judging from the initial thrust, it should be much faster than an ordinary elevator.

Sure enough, after just a dozen seconds, the speed of the vine ball began to slow down.

Finally stopped.

Afterwards, the vines that had originally grown and crawled at the door slowly retracted, revealing another wooden door.

It's obviously not the same door as before, it's a circle bigger than that one.

Then, the door slowly opened outwards by itself.

Several people walked out of the vine ball.

The field of vision suddenly became extremely wide.

"Hmm? Hmm!" Keke screamed in surprise. Her little paws didn't hold on tightly and she almost fell off Xu Xin.

Looking up, it was...

A piece of sky?

"Is that... a cloud?" Zeng Tao's eyes almost popped out of her head. "It's a cloud, right? Isn't this the inside of the World Tree? Where have we been teleported to?"

They... seemed to have been sent to another area?

The ground is soil and the sky is filled with clouds.

However, there was no vegetation on the soil and the area around was barren.

It was night time and the surroundings were relatively dark. Of course, it was not as completely dim as the roots where they were just now. It was just the normal brightness of a night.

"What? Have we been sent to some desolate wilderness?" Lou Feier looked around. "Why isn't there even a blade of grass here?"

Shi Wanyun and Jin Yue also frowned slightly.

Where is this?

Why didn't they go to the tree house in the World Tree?

Xu Xin looked up at the sky, squinted his eyes, and whispered, "This is the inside of the World Tree."

"……ha?"

"What……?"

The four girls all looked at him.

Xu Xin had just controlled his watch and selected today's historical amplification: Vision Amplification. Now he could see that above the cloud was not the sky, but...

dome.

Wooden dome.

This height...

It's more than ten kilometers.

Tens of thousands of meters in height?

Xu Xin took another deep breath.

This was the umpteenth time he had adjusted his mindset today.

"You mean, this place... is affected by time and space, the inside of the World Tree?" Shi Wanyun couldn't hold it in any longer at this point, her face full of shock.

She had seen the inside of the World Tree, and this difference...

This is not the same thing at all!

"No wonder it's called the World Tree..." Xu Xin muttered to himself, "The entire interior of the tree can definitely be called a small world."

Just now they speculated that the space inside the World Tree had expanded hundreds of times due to the influence of time and space.

We can estimate something from the height inside the World Tree.

The height above is probably... more than ten kilometers, or more than ten thousand meters.

The thickness of the World Tree's crown is more than one hundred meters.

In other words, the height became more than a hundred times the original.

Is the area also...

Xu Xin looked around and saw an endless expanse with no end in sight.

If you multiply it by a hundred times...

From the outside, the area covered by the World Tree's crown is more than two kilometers in radius.

Therefore, the area of ​​the tree house space inside should be the area of ​​a circle with a radius of two kilometers.

It’s about... thirteen square kilometers.

If it were magnified a hundredfold, it would be...

One thousand three hundred square kilometers!

If it's really that big, then this area...

It can already be considered the area of ​​a city!

It’s not a county town, it’s a prefecture-level city!

The area of ​​a prefecture-level city!

Judging from the space alone, the interior of this World Tree can undoubtedly become the home of tens of millions of people!