This canyon is also not big, but it is the size of two football fields, but in such a canyon, there is only one towering tree.

The trees were surrounded by bare ground, and some thick rhizomes peeking out of the soil, and there was nothing else left, not even a single weed in sight.

Cui Yu frowned and looked at this tree, having experienced a battle in the magma world, Cui Yu would not simply think that this canyon would be simple.

He carefully stayed away from the big tree, and circled around the canyon, the canyon was not big, and Cui Yu quickly turned around.

Cui Yu, who returned to the same place, looked at the big tree again.

The canyon is an irregular oval with smooth cliffs on all sides, and although there are occasional raised rocks and crevices, the cliffs around this canyon are too smooth compared to the others.

Cui Yu even experimented and found that this cliff was also extremely hard, although Cui Yu couldn't be sure, but no one knew if the top of this cliff would be the same as the one below.

Although Cui Yu is quite confident in his strength now, he has no way to know how deep this canyon is, and Cui Yu is not confident that he can crawl on this cliff that he doesn't know how deep it is.

Because Cui Yu wants to climb on this cliff, he is bound to break through the mountain wall, but if he wants to break such a hard stone, Cui Yu has to spend a lot of strength.

In case Cui Yu's physical strength is exhausted, he can't go up or down when the time comes, embarrassment is a trivial matter, but life and death are a major matter.

Everyone knows that climbing up is easy, but coming down is hard. If he falls from a high altitude, let alone Cui Yu, even a master who practices to return to the void will die.

In the end, Cui Yu decided to climb to the top of the tree first to take a good look at how high the valley was.

However, Cui Yu was not reckless, he walked to the root of the tree first, put his hand on the root, and felt with his heart whether there was anything strange about this big tree.

After all, this kind of big tree is rare in the world, not to mention here.

However, no matter how Cui Yu perceived it, he couldn't feel where the fire of life of the big tree was.

In other words, now the big tree gives Cui Yu the feeling that it looks like an inanimate object. It's really weird.

However, if you want to escape from here, you have to climb this big tree anyway.

Releasing his perception, Cui Yu cautiously approached the tree.

This big tree is too thick, the bark on the surface is vertical and horizontal, Cui Yu tried to break off the bark casually, and found that the bark of this big tree is as hard as steel, although Cui Yu used some strength at will, it was also quite terrifying.

If it is an ordinary tree, I am afraid that it will be directly caught by Cui Yu's claw, and a hole will be scratched.

But the bark of the big tree did not move, not even a single sawdust fell.

Cui Yu was shocked at this time, and knocked on the bark with his hand, making a metallic knocking sound.

"Could it be that this big tree is made of metal?" Cui Yu was dumbfounded.

But in this way, Cui Yu is a lot more relieved, at least he doesn't have to worry about climbing halfway, because the bark is loose, and he will fall down again.

As soon as he gritted his teeth, Cui Yu used both hands and feet at the same time, and the whole person was like a monkey, quickly crawling on the trunk of the tree, crawling towards the top of the big tree.

Cui Yu cultivated the twelve true forms, and the monkey form was even more cultivated to an extremely advanced level, just climbing trees, there would be no reason for Cui Yu at all.

But in an hour, Cui Yu had already arrived in the clouds, and as soon as his figure scurried, he disappeared into the clouds and mist.

As soon as he entered the clouds, Cui Yu immediately slowed down. Because these clouds and mist don't seem to be ordinary, Cui Yu's line of sight here can only see three or four meters around, and no matter how far away, he can't see at all.

Cui Yu stopped, used his hand to catch a wisp of clouds, and observed carefully, but there was no result, these clouds and mist were indeed some simple water vapor.

But now, these simple clouds can make Cui Yu's vision so obstructed, which shows how thick the clouds and fog are here.

But after staying for a while, Cui Yu found that the clothes on his body were already soaked. It was like a heavy rain.

Shaking his head and shaking off the water droplets from his hair, Cui Yu began to climb again.

After another half an hour, Cui Yu finally saw the first branch of the big tree, thick as a platform.

Cui Yu moved his body and came to the platform, and then let go of his hands and feet.

Tear off a strip of rag from your body and tie your loose hair into a ponytail.

The moisture here is so thick that there's nothing down there, but here, the hair is full of droplets, and it's really uncomfortable to fall on the face.

Now I finally have my hands and feet free and fix my hair.

After tidying up, Cui Yu looked at the branches that had disappeared into the clouds, and Cui Yu decided to go to the end of the branches to see if he could touch the mountain wall, if only he could know how high this valley was.

Originally, this was also Cui Yu's purpose.

After walking for a while, Cui Yu came to the end of the branch, no, he can't say that, because this thick branch has already sunk into the mountain wall, and there is no way to know how long this branch is.

Cui Yu looked at the mountain wall in front of him and sighed, even more surprised that this valley was so deep.

Cui Yu had been climbing on this trunk for more than an hour, but he had not yet reached the top of the valley! Cui Yu patted the mountain wall helplessly, ready to continue climbing, he still didn't believe it, could this valley be as high as the sky.

But at this moment, suddenly a sound of breaking the sky sounded.

Cui Yu's face changed, and he suddenly passed forward two or three feet away.

Then a loud explosion was heard behind him, and even the tree trunks under his feet were shaking.

Cui Yu turned around and found that a deep pit had appeared where he was standing, and a large gray-brown snake was lying there with an attacking posture.

Cui Yu frowned, it was the first time he had seen such a terrifying snake.

You must know that this world is no longer the time of antiquity, and beasts are only beasts, and the ancient divine beasts and fierce beasts have long been extinct, and there are no such terrifying monsters at all.

Cui Yu understands how hard this big tree is, if a martial artist wants to cause such damage, Cui Yu will not be surprised, but a strange snake can actually smash this trunk out of a deep pit, how terrifying this strange snake is.

Without waiting for Cui Yu to think about it, this strange snake had already shot towards Cui Yu like a sharp arrow.

The big open hand was as huge as a porcelain bowl, and in the mouth of a snake, it was not like other snakes, there were some poisonous fangs or something.

Instead, there are two rows of sharp teeth, Cui Yu feels that if he is bitten by this thing, it is estimated that even if he is himself, he will not feel good.