When Bai Yunfei reached the edge of the square, he was stunned.

The huge square looks like a lake. It is not small in area, but the water is only about one foot deep.

It's almost crystal clear.

But it was precisely because the water was so clear that it made his scalp tingle.

I saw countless thin lines in the water, like snakes, but much smaller than snakes, and so densely packed that it made people feel extremely uncomfortable.

Moreover, this kind of thing is extremely active in the water. They form clusters in the water, forming a terrifying picture.

Others have not arrived at this place yet, but even if they did, they would probably be at a loss.

With one palm strike, the internal force hit the water surface.

Countless of these creatures shot into the air.

A chilling scream was heard.

“Chichichi!”

There were pimples all over my body.

After seeing that there was no one around, he simply released the Soul-Devouring Heavenly Fire.

This kind of flame ignores water, and a large ball of flame fell directly into the square.

It covered the sky and the earth, swallowing up all the substance.

Like a whirlwind sweeping away all the remaining clouds, the flames grew stronger and stronger and advanced towards the distance.

As long as there is life, the Soul-Devouring Heavenly Fire can devour it. As for the speed, it depends on the strength of the being devoured.

Although this thing looks terrifying, its strength is only innate.

In just twenty breaths, the fire in the sky was quickly retracted, and the foreign objects in the square completely disappeared.

The water became extremely clear, as if it had always been that way.

He breathed a sigh of relief, looked at the square in front of him, and walked in.

A foot of water was no problem, so he walked towards a door on the opposite side.

I reached the end very easily, stood on the shore, and pushed the door open.

The tall tower in the center must be not far away.

After pushing open the door, the scene in front of him surprised Bai Yunfei again.

It looks like an exhibition hall, and there are countless creatures in the crystal containers.

Among them, Bai Yunfei looked familiar with only a few species, all of which were extremely ferocious beasts. However, he noticed that the common feature of these beasts was that the energy fluctuations they emitted were all of yin nature.

There were dozens of ferocious beasts, and the entire hall was filled with rich yin energy.

These ferocious beasts seemed to be frozen in time, and their expressions were extremely realistic. However, the despair and terror of death made Bai Yunfei feel a little uneasy.

According to Fairy Piao Miao, this is a master from the heaven who is trying to obtain the Yin attribute of internal force in order to achieve the goal of Yin and Yang balance, improve his strength and get promoted.

Then the existence of these evil beasts with yin attributes is reasonable.

Without paying much attention, he walked straight to the end, where there was an iron door.

Without any hesitation, because his mental power was constantly scanning the area within a ten-foot radius, there was no warning of any danger.

It took 80% of his strength to push the iron door open, and an open space appeared in front of him.

There is an open space of dozens of acres in size, with a stone tower standing in the middle.

The hexagonal stone tower has no decorations at all, and even the places where the windows were originally have become walls.

There is only a stone door at the bottom.

It doesn't look like a stone tower, but more like a stone coffin.

Bai Yunfei's heart moved. It seemed that this was the stone tower in the middle. After climbing the tower, he would be able to reach the two big suns.

The ultimate treasure must be there.

But the real danger is probably there too.

However, there are many gates around the tower, and Bai Yunfei has other ideas.

This building is a huge circle with a stone tower in the middle.

But almost 80% of the area has not been explored.

I was wondering whether I should enter the stone tower first or explore the surrounding buildings.

But at this moment, the ground not far from the stone tower began to wriggle, and a human head popped out.

There is no wrong version in the 1619 book forum!

Bai Yunfei was shocked.

When he saw who it was, even Bai Yunfei was shocked.

The old man who could evade the ground could actually still evade the ground in this building. This ability was simply terrifying.

Ordinary warriors, even if they have developed internal force attributes, cannot reach the level of the old man. The internal force of earth attribute has excellent defensive capabilities, and he is naturally friendly to the earth.

But it's just affinity. If you want to reach the old man's ability, you must...

Basalt ice crystal!

The old man's attribute abilities have definitely been upgraded.

Not only is it close to the earth, it has already reached the point of being able to escape underground.

After figuring this out, Bai Yunfei looked at the old man with deep meaning in his eyes.

Being able to upgrade his own attribute abilities, it seems that this old man is no simple man!

After the old man stuck his head out, he first saw the stone tower. There was shock in his eyes. He was stunned for a few breaths before he looked around.

However, when he turned around and saw Bai Yunfei, the old man's expression was even more shocked.

The body came straight out of the ground.

When the old man was in the soil, his internal energy was constantly being consumed and flickering.

After coming out, it disappears into the body.

As Bai Yunfei took a step forward, he was already close to the old man.

With a hint of deep meaning, he looked at the old man.

"Senior, your strength is truly amazing to me! I wonder if your internal strength is the result of your advancement?"

Hearing Bai Yunfei's question, the old man was stunned. After a little hesitation, he said, "Young man, don't try to trick me. My inner strength is indeed the result of my promotion. It's just that when I was young, I had the opportunity to obtain a few basalt ice crystals."

Hearing the old man's admission, Bai Yunfei perked up and immediately asked, "Did you obtain it in Mirror Lake, Senior?"

When the old man heard what Bai Yunfei said, he looked surprised.

"So you also know about Mirror Lake! Alas! It was also a fluke. Others were fighting for this thing, so I got the advantage. But I dare not enter the Mirror Lake. It is too dangerous. Warriors who are not ranked on the Sealed List should not even think about entering it. Otherwise, they will die the moment they enter the water."

As if there was a great fear, the old man felt palpitations even when he was recalling the past.

"Senior! Is Mirror Lake really that dangerous?"

"It's more than dangerous. Only geniuses among geniuses have the ability to go deep into the Mirror Lake. However, the dangers in the Mirror Lake are beyond imagination. Even if you get the Black Tortoise Ice Crystal, you will face the snatching of many masters after reaching the shore. There may even be warriors in the Sky Control Realm among them. Because the value of this thing is too amazing, all large sects want to get it at all costs. But I heard that it seems to have become much stronger in recent decades. The major sects have stipulated that in this area, only those in the Spiritual Martial Realm can stay. If the Sky Control Realm appears, they will become the public enemy of the major sects. It is estimated that the danger has been reduced a lot."