While Ling Ruo was studying the skeletons, on the other side, Li Weitian and his party were also working hard to study the underground space they were in.

The six of them walked in different directions, and soon found out that the length, width, and height of this space were all about ten or twenty zhang, which was much smaller than they had expected at the beginning.

"It is not difficult to see from the monuments left on the ground that the buildings of this ancient city are actually about the same size as this underground space. Could it be that this place is really just a basement with matching buildings on the ground? Xu Ziyun asked suspiciously.

Yin Fufeng disagreed with her point of view: "If it is matching, what about the passage connecting the ground and underground?" You built a basement in your house, but you didn't build a staircase? How to go up and down after it is built? ”

There is no other entrance or exit to this so-called basement except for the hole above the head that was fought by the previous people.

"And that little whirlwind. After entering, there was no trace of the little whirlwind. He Kong reminded them of the most important thing.

Thinking of this, everyone fell silent again.

The little whirlwind is the thing they are most concerned about now, and there is no one.

The eight of them, sixteen eyes, all clearly saw that the little whirlwind had burrowed into here, and now it had disappeared out of thin air. It's as unsettling as the huge skeleton that disappeared out of thin air.

"Speaking of which, how did this little whirlwind come about? And how do you maintain your own rotation? The one we just saw was the one Li Liankun saw before? Is it the same as the one that the ancestor of the Li family saw three hundred years ago? Yin Pengfei asked slowly.

It's a pity that no one can answer these questions now.

Li Feng glanced left and right, and couldn't help but say, "The disappearance of the little whirlwind will be the same as what we encountered in the maze at that time." At that time, we all entered together in pairs, but the people around us suddenly disappeared. This seems to be because the passages in the maze can turn on their own. You say, is this going to be like that labyrinth? ”

"Do you mean that the little whirlwind was transferred to a place we don't know about? The premise of your hypothesis is that there are countless passages to this place, like a labyrinth. We don't even know if there's just this basement right now. Yin Fufeng frowned and said.

Li Weitian was silent, and the others might not be sure if there was only one basement here, but when he thought of what Ling Ruo had said to him before, he could guess that there must be more than one.

According to Ling Ruo, those triangular buildings in the places where the sudden death occurred were actually passages in the underground space, so the underground was definitely more than what they saw now, and its size range was far beyond what they imagined.

It's just that he has a doubt, since the danger comes from the underground, and the passage between the underground and the ground, the triangular building, is indeed a high incidence area of sudden death, but why, the hole formed by the subsidence can also be connected to the underground space, but there are no sudden dead corpses around?

Could it be that he really said that the people who died here have been cut into scum that can be seen by the little whirlwind?

Is the sudden death around the triangular building unrelated to the little whirlwind?

Since the triangular building is the formal passage of the underground space, will the little whirlwind from the underground space also come out of there?

"Let's look hard and see if there's anything missing. Now that there is no little whirlwind in sight, there are only two possibilities, either it will fend for itself here, or it will be transferred to another place. There was nothing but sand here, and the little whirlwind didn't look like it was left to fend for itself here, most likely moving somewhere else. We tried to find out if there were any hidden passages around. Li Weitian said.

The others had to look for it again in earnest.

Because the skeleton had already been wrapped in the prohibition of the Lock Spirit Ring, Ling Ruo simply unfolded his divine sense to wrap it and examined it seriously. Unfortunately, even so, she couldn't break it.

If you can't break it, you can't use it.

It's bald!

Ling Ruo could only sigh and put it aside after examining the skeleton to no avail. On the contrary, it is now trapped by the Locking Spirit Ring, which is a flower shelf, and there is no danger.

Ling Ruo refocused her attention on the buildings of the ancient city, she couldn't use her divine sense to look at the center of the ancient city before, but now that she was in it, she could take a closer look.

In the center of the ancient city was a huge platform square, but now it was occupied by the skeleton. Around the square, there was a circle of buildings, except for a few buildings, which looked more spacious than the rest of the city, Ling Ruo couldn't see anything special to pay attention to.

She felt that the biggest secret of this ancient city should be in the underground part, so she quickly ignored the buildings above ground and turned her attention to the underground.

And the underground space of the ancient city is not only one floor.

The first floor is about the same size as the ancient city, and is divided into lattices of about the same size.

The second floor is nearly five miles smaller than the radius of the first, and the space is divided into small compartments like the first.

The third layer after that is also nearly five miles smaller than the radius of the second layer. The area of the third floor is not large, it is larger than the square in the center of the ancient city, and it is not divided into grids, but some pillars are added in the middle to support it.

In addition, there was a fourth layer—Ling Ruo didn't know if it could be called the fourth layer, because it was a hole about twenty zhang wide with a diameter of about twenty zhang, and it was three miles deep.

Below, there seems to be room for the fifth floor.

Ling Ruo's divine sense, if spread horizontally on the ground, could reach a maximum range of ten miles. But if it's underground, it's somewhat restrictive, and there's no way to spread out as much as it does on the ground.

In particular, in the underground part, she couldn't use the power of the large array she had just laid down to extend down to a depth of several miles, and it was already not easy to vaguely find the existence of the fifth layer of space below.

As for whether there is a sixth or seventh layer of space below the fifth layer of space, she has no idea at all.

However, there was good news that Ling Ruo had not discovered the existence of a large amount of demonic qi in this ancient city or in the underground space where her divine sense could reach.

At least for now, it seems that it is also making a fuss underground, and it is not the same as a labyrinth here.

The above-ground part of this ancient city looks very normal, and there is no hidden mystery underground. The fact that the underground here was built like this is certainly not for the sake of seeing, but must have a meaning for its existence.

That labyrinth is a place where the demon built it to increase his cultivation and advancement.

So what was the underground space of this ancient city built for?