Obviously, the plesiosaurs did it on purpose and sank directly under the water without any signs.

The plesiosaur swims rapidly underwater.

It turns out that this is far from being as simple as a lake. Underwater, connecting an underground river, there is actually another world.

The plesiosaur advances rapidly in the underground river.

Fortunately, Wang Tiezhu, Qiu Chen, and Beiye Binger are all martial artists in the realm. They use breathing methods to activate breathing methods in the water, and their bodies form their own circles. They can also absorb oxygen from the water, so that they will not be suffocated to death.

The plesiosaur was very fast underwater, galloping like a sharp arrow. However, even so, it still galloped in the underwater river for more than half an hour.

Wang Tiezhu was shocked. With the speed of a plesiosaur in the water, how far did he have to go in the past half hour?

There is no doubt that they must have left District 13 now.

Thinking of this, Wang Tiezhu's heart was thumping.

Doesn’t this mean that they can use this method to leave District 13?

I believe that people in District 13 would not have thought that under the waterfall, there would be an underground river that could allow people to escape from District 13?

In fact, how could District 13 not know?

District 13 has been established for so long, and the people of the Hei Water Security Company are well aware of any terrain around them. There is an underground river, so they naturally know it.

However, they knew in their hearts that those who were imprisoned in District 13 could not know that there was an underground river channel there.

The reason is very simple, and few people dare to get into such a deep position.

When you come here, you will encounter many terrifying strange beasts along the way, which can easily tear people to pieces.

Even if you can come here by chance, this place is still the territory of the plesiosaur. When you enter the water, you will become the plesiosaur's belly.

Although this is a passage to leave District 13, there is a guardian of the plesaurus, a big guy who is enough to be called the overlord in District 13, and it is impossible for him to escape.

About forty minutes later, the plesiosaur suddenly accelerated and began to rush upwards.

At this time, Wang Tiezhu discovered that they were at the foot of a mountain.

The lower half of the mountain is in the water.

And just below the mountains and rivers, there was an extremely huge cave, and the plesiosaur rushed into the cave directly.

After rushing into the cave, the plesiosaur continued to swim upwards.

Is this cave empty?

Wang Tiezhu quickly came up with this result.

Sure enough, the next moment, the plesiosaur had already rushed out of the water.

At this time, Wang Tiezhu discovered that the mountain was indeed hollow, and there was still a large space in the hollow abdomen of the mountain without water.

At the same time, there is air here.

Wang Tiezhu let out a long breath.

Although they can use the secret method of running to get oxygen from the water, they have a clear sense of stuffiness. How can they feel so good when breathing fresh air in such a big mouthful?

After coming here, the white tiger and the plesiosaurs became excited.

Soon, Wang Tiezhu discovered a strange place.

I saw that there was an area on the mountain wall, without cliff walls, but with strong energy fluctuations.

Energy barrier?

Wang Tiezhu was slightly shocked.

This method is simply not something that people in the world today can do.

The white tiger jumped off the head of the snake plesiosaur, pointed to the place with strong energy fluctuations, and kept making gestures.

Wang Tiezhu nodded, as if he understood the meaning of the White Tiger.

Baihu wanted him to break through the energy barrier.
Chapter completed!