"This is the Cave Heaven?"

Li Changqing opened his eyes again and appeared on the mountainside of a large mountain, and the entrance to the cave disappeared when he entered.

If it weren't for the fact that the landform in the cave was different from the outside, and it was dark outside, it would be daylight in the cave.

Li Changqing must have suspected that he had just changed places.

"This sun is too scorching!", Ren Fei's martial arts are already close to the level of condensing blood pills, even if he exercises fiercely, he will not sweat, but under the illumination of this sun, after only a few minutes, he is a little impetuous, and there is a faint tendency to sweat.

"Yes, can there be any living creatures survive in this weather?", Zhang Qianfeng inherited the Maoshan inheritance, as well as some Taoism pointed out by Li Changqing, and he was far inferior to Ren Fei in terms of body control, he was already sweating profusely at this time, breathing heavily, and at this level, it is estimated that in another half an hour, he will faint from heat stroke.

"It's indeed a bit weird here!", after Li Changqing entered the cave, his mind felt suppressed, as if he was not entering the legendary cave heaven blessed land, but a heaven and earth cage.

"If this place had been in this kind of weather often, it is estimated that the ground would have cracked a long time ago, not to mention that there are so many towering trees!", Ren Fei looked around and expressed the doubts in his heart.

"Well, the leaves of the trees in this place are all gray, not even a little green!", Zhang Qianfeng also felt that there was something wrong in his heart.

"This forest is too hard!", Ren Fei pulled out a knife from his trouser leg and slashed at a nearby big tree with a thick bowl mouth, leaving only a shallow mark.

"Mr. Ren, your knife is made of stainless steel, and with your strength, a thinner steel plate can be cut off, which shows the hardness of this tree!", Zhang Qianfeng showed an extremely surprised expression.

"Yes, I don't know what kind of wood it is, not to mention anything else, if you can get this kind of wood out, it will be a great harvest!", Ren Fei thought that if he could make this kind of wood into armor and put it on the members of Nadutong, it would not only be very lightweight, but also extremely defensive.

"Cut down a few trees and build a wooden shed, the bottom of the wooden shed must be at a sufficient distance from the ground!", Li Changqing thought for a while.

"It's still the teacher's thoughtfulness, if I continue to dry like this, I will shed my skin even if I don't die! It's hard to imagine how those people and bears survived!", Zhang Qianfeng said.

"I originally thought it was a blessed land, but who knew that the environment here was so bad, and I dragged you in, Master Li!", Ren Fei said apologetically.

"It's not for you to build a wooden shed to escape the heat, and the worse is still to come!", Li Changqing said with a smile, and there was some kind of conjecture in his heart.

"Worse is yet to come?"

Ren Fei and Zhang Qianfeng all knew that Li Changqing never lied, and the freshness of coming to the cave was gone, and his mood suddenly became gloomy and gloomy.

The trees here are indeed very hard, and ordinary people may not even break a branch, but Ren Fei and Zhang Qianfeng are very human, and it took a lot of effort to finally cut down more than a dozen trees, first stuck between a few branches to make a bottom, and then the outside was obliquely erected to form a triangular top, and then a layer of gray trees was spread on top of the trees.

The two had just finished building, and Zhang Qianfeng's whole person seemed to be prostration, and even Ren Fei was sweating.

"It's coming!", Li Changqing stood outside, and he was not affected much under the scorching sun, but the sky and the earth suddenly changed color, just now it was like a barbecue, and in the blink of an eye, the whole world became gray, and the clouds were pressed very low, as if they could touch it as long as they jumped up.

"What's going on?", Ren Fei and Zhang Qianfeng were hiding in the wooden shed, but when they saw that the sky and the earth suddenly changed color, they also poked their heads out to find out.

"Hide in!", Li Changqing finished speaking, and also hid in the wooden shed.

In an instant.

The black pouring rain fell from the sky, and a strong sour smell could be smelled in the air.

"This is acid rain, but doesn't acid rain only occur in places with serious chemical pollution? Why does acid rain also occur in the Shennongjia Cave?", Ren Fei said with wide eyes.

"And the acidity of this acid rain is much stronger than the acid rain caused by chemical pollution outside!", Zhang Qianfeng said and looked at Li Changqing with admiration, "Teacher, when you just asked us to build a wooden shed, you said that this is not for us to escape the heat, have you already discovered the clues here, and expect that there will be acid rain soon?"

"If there is no Master Li to take precautions, once we are drenched in this acid rain, I'm afraid we won't be able to bear it!" , Ren Fei felt very scared when he thought about it.

"Hehe, I'm not omniscient and omnipotent! This Shennongjia Cave Heaven doesn't know how many years it has existed, how can I see the doorway as soon as I come in!", Li Changqing smiled, and explained, "Natural selection, survival of the fittest! Since this place has an extremely high temperature of the scorching sun, there are also such extremely hard trees, and almost all of the trees are gray, indicating that it is very likely to rain after the scorching sun! This kind of rain can knock out those fragile trees, which can be seen to be extremely stimulating!"

"It's so simple......"

Before Li Changqing finished speaking, Ren Fei and Zhang Qianfeng understood.

"No wonder there is such a sentence, I know a lot of truths, but I still can't live a good life! The truth of the teacher's reasoning just now, most people understand, but in this environment, there are very few people who can use this kind of truth!" Zhang Qianfeng said with emotion.

"Yes!", Ren Fei felt the same way, if they were outside, they might be more alert, but in the complex environment of Dongtian, all aspects of their functions were weakened, and their performance was not much stronger than ordinary people.

"Hey, I'm a shallow cultivator after all, even if I become a Confucian Taoist master and a Taoist master, my heart is not round enough after all!", Li Changqing promised Ren Fei to enter the Shennongjia Cave Heaven, part of the purpose was to come in to collect medicine, and there was greed in his heart, but the current situation shows that this is not the legendary Cave Heaven Blessed Land, and I don't know what herbs can survive in this harsh environment.

"Teacher, what you said really made us ashamed!", Zhang Qianfeng and Ren Fei were full of shame.

Li Changqing adjusted his mood slightly, to his realm, it is difficult for ordinary places on the earth to bring him opportunities, but blessings and misfortunes depend on each other, and a dangerous place like this may be where the fate lies!

But with a heart to the Tao, it is good to be invincible and move forward!

When Li Changqing thought of this, he suddenly had a lot of thoughts, and he became more and more sure of his previous guess, "If I'm not mistaken, this is very likely to be a heaven and earth cage!"