Netherworld Minefield Cave.

After some conversation, Mo told everything related to the two caves that suddenly appeared, and Xiu Tianyu understood the secret.

Mo and the others were trapped here, and this stone cave was not so big, and it only ended at the location of the waterhole. Seeing that they couldn't leave the Netherworld Thunder Domain from the outside, they thought about him differently, that is, digging a cave and digging a mountain range, and they could naturally leave.

After making up their minds, they worked hard to dig the cave, but in the Netherworld Thunder Domain, this mountain range has also undergone countless years of tempering by thunder, and it has long been strong and abnormal, several times harder than ordinary mortal iron, which has caused great difficulties for their excavation project.

They were seriously injured and did not carry the tools used to dig with them, so you can imagine their hardship. Without tools, they used their weapons and brute force to excavate, and later, the weapons were broken, and the body could no longer support them, and finally turned into a soul body, but they still did not stop, and they still worked tirelessly to dig this huge project.

After years of hard work, the stone cave extended inward for nearly 600 zhang, and finally ushered in a glimmer of light, and the mountain range was not chiseled, but appeared in front of the two holes in front of you. They were also very excited, thinking that as long as they got out of these two mysterious holes, they would be able to get out of trouble, but they didn't want to change again.

In the middle of these two caves, in the left one, there was an essence of fire, the Pure World Heavenly Flame, blocking the way, and in the middle of the right one, there was also an essence of ice, the existence of the Void Ice Core, these two essences of heaven and earth, completely blocked their way and shattered their hopes.

If it was during its total victory, these two heaven and earth essences were not enough for them to stuff their teeth, and if the physical body did not fall, even if they were seriously injured, these two heaven and earth essences would only bring a little difficulty. But when they excavated here, only the soul body remained, and these two heaven and earth essences were the nemesis of the soul body, which completely cut off their thoughts.

Of course, they were not reconciled, and they also took a risk, but they were injured and returned, and their soul bodies became weaker and weaker, and they didn't even have the strength to dig another place, so they had no choice but to give up.

Xiu Tianyu stood not far from the two cave entrances, feeling the completely different coercion emanating from them, but his mood was inexplicably excited. Seeing that the exercises were limited and his cultivation could not be improved, he just had two heaven and earth essences in front of him, and when he thought that he would be trapped and die here, this cave within a hole might lead to the outside of the Netherworld Thunder Domain, as long as he walked out of here, he could spread his wings and regain his freedom, this surprise came too suddenly.

Such a surprise made it difficult for him to calm down, and his heart could be described as extremely hot, if it weren't for Mo's strong dissuasion, he would have liked to enter it immediately.

"Mo, which kind of heaven and earth essence do you think I should devour first?" After calming down, Xiu Tianyu wanted to listen to Mo's suggestion, after all, he had been here for so many years, and he knew the two heaven and earth essences best, and his suggestion could make him avoid detours.

Seeing that Xiu Tianyu was not carried away by this surprise, Mo couldn't help but nodded, and after he was silent for a while, he gave his own suggestion.

The Pure World Heavenly Flame is also considered a superior existence among the countless fire essences, and it is not much weaker than the essence of fire. The pure world is hot, and the flame is blood-red, which can burn all the false existence in the world, and restore the heaven and earth to a clear place, creating a bright and clear world, which is for the pure world. In front of it, all that is illusory, evil, and dark will be purified by it. Therefore, in front of it, you had better not have any evil thoughts, otherwise you will be refined and cleanly refined by it.

The Void Ice Core is born from the mutation of the essence of water, and it is an invisible existence, more powerful and terrifying than the ordinary essence of water, you can only feel its existence, but you can't see its appearance clearly. The Void Ice Core can not only freeze people's vitality, but what is more terrifying is that its freezing power will directly act on the soul, freeze the soul, the soul will dissipate, and the person will die invisibly. The soul is weak, and it will be vulnerable in front of it, even if the soul is strong enough, it cannot compete with it for a long time, and the so-called nothingness is that when you don't notice it, he has already launched an invisible attack on you.

Xiu Tianyu was taken aback when he heard this, he originally thought that the so-called essence of heaven and earth was just the condensation of a certain attribute of vitality, and it was the purest attribute essence, as long as he ran the exercises himself, he could absorb and refine it as an ordinary vitality, then he thought that things were not as easy as he imagined, even the most ordinary essence of heaven and earth was a terrifying and abnormal existence.

Seeing that Xiu Tianyu had completely calmed down, Mo nodded and continued: "Tianyu, it is unimaginable that you have thunder and space power in your body. And you kid doesn't know what's going on, you are born with a powerful soul, and these two powers are integrated into the body, which can be described as weird and abnormal, it's simply a demon!"

After hearing this, Xiu Tianyu's heart moved, and he said, "You mean to let me devour the Void Ice Core first?"

"No!" Mo frowned and pondered for a moment before giving his advice.

"Devour the Pure World Heavenly Flame first?" Xiu Tianyu was puzzled, the Pure World Heavenly Flame was obviously more terrifying than the Void Ice Core, he didn't dare to guarantee that he wouldn't have any crooked thoughts in his heart when he faced it, and that Void Ice Core seemed to him, with his abnormal soul, there might still be a chance.

"The Void Ice Core may seem easy to deal with, but don't forget, it works on both the soul and the body, and even if your soul can hold on, your body may not be able to resist the freezing power. If the physical body can't bear it first, your soul will lose the protection of the physical body, and it will be difficult to escape the way to destruction! The Pure World Heavenly Flame seems to be even more powerful and terrifying, but you may not have the strength to fight, if you can devour the Pure World Heavenly Flame, then it will be much easier to deal with the Void Ice Core again. Mo thought for a while before he said the reason why he wanted to let Xiu Tianyu devour the Pure World Heavenly Flame first.

Devouring and absorbing the Pure World Heavenly Flame first, then Cultivating Heavenly Feather would be able to mobilize the power of the Pure World Heavenly Flame, and then devour the Void Ice Core. The Pure World Heavenly Flame is fire, although the Void Ice Core is the essence of mutated water, but its attribute is still water, among the five element attributes, although water overcomes fire, but with the Pure World Heavenly Flame to protect the body, the body is enough to protect itself, so that the hope of devouring the Void Ice Core is much greater!

Xiu Tianyu did not act recklessly, and after making up his mind, he returned to the waterhole, took out the spoiled dry food to fill his stomach, and ate ten myelin peaches in one go, adjusting his state to the best. If you want to do a good job, you must first sharpen your tools, and at this moment, it is not the time to save, only if you are well prepared, it is convenient to act.

Mo also told Xiu Tianyu everything he knew, especially about how to devour, those places that needed to be treated with caution, and they were all clearly explained.

After being fully prepared, Xiu Tianyu came to the entrance of the cave within the cave. He stood at the mouth of the fire cave, the scorching air flow came from the cave, he couldn't help but take a deep breath, the air was hot, so that his blood couldn't help but flow a little faster.

He glanced back at Mo behind him, Mo also nodded to him, and Xiu Tianyu stepped out firmly, slowly walking towards the scorching cave.

Watching the young man's figure gradually disappear into the hole, there was not the slightest change on Mo's beast face, but he was very worried in his heart. In the final analysis, although many aspects were taken into account when creating this "Reverse Qiankun" exercise, and if you want to make the exercise strong, you need to devour the essence of heaven and earth to evolve, but whether it can be achieved or not is still an unknown mystery. After all, from the beginning of the creation of this exercise to the present, everything is still only based on theory, and no one has really succeeded in cultivating, let alone devouring the essence!

Xiu Tianyu is the first martial artist to cultivate "Reverse Qiankun", and what this exercise is, he has to slowly explore and constantly improve it himself, so that it can truly form a complete exercise. The current "Reverse Qiankun" is better said to be a work of martial arts theory than a martial arts theory, and it is not a real cultivation method at all.

If you talk about the level of exercises, "Reverse Qiankun" may not even be considered as a low-level exercise of the Yellow Rank, because now this exercise only records the cultivation methods of cultivating to the Hundred Refining Realm, and even these recorded methods are still in the theoretical stage, and I don't know whether they actually have any effect or not.

As a soul body, Mo Han couldn't go with Xiu Tianyu at all, and he couldn't help anything, so he could only wait outside the cave with worry, staring at the entrance of the cave, looking forward to the safe return of this immature young man.

In the fiery cave, Xiu Tianyu's eyes were firm, his whole body was tense, and he walked on the fiery stone step by step, the temperature here was not too high, although the strength of Xiu Tianyu's body was very hard to resist, but it could still last for a while.

As Xiu Tianyu continued to go deeper, there were gradually a few more changes in the cave. The stone wall was roasted hot, and there were gradually signs of melting, Xiu Tianyu's face was covered with sweat, which could be described as sweat raining, because he had lost a lot of water, he felt dry mouth, and even his lips were wrinkled.

The further you went, the hotter the stone wall became, and gradually glowed red, and it had melted a little from the roast. Xiu Tianyu stepped on it barefoot, and suddenly let out a sneering sound. When he came here, he had to run the exercises to resist the fiery energy that was constantly eroding him, and the situation improved slightly.

"Poof......

The fig leaf on Xiu Tianyu's waist, as well as the little hair that had just grown on his head, could not withstand the scorching heat, and instantly rose into green smoke, burned, and turned into ashes after a while. At this time, even the skin on his body was necrotic a lot, Xiu Tianyu could no longer hold on, he didn't dare to be strong, and hurriedly mobilized the power of space to wrap himself in it.

The young man's figure was firm, moving forward step by step, leaving only a clear footprint on the stone slab on the ground!

The power of the void space didn't let him last long, and after walking for nearly a hundred zhang, even the void space he built was baked hot, and it could be shattered at any time. It was only at this time that Xiu Tianyu truly realized the power of the Pure World Tianyan, everything was not as simple as he imagined.

Just when Xiu Tianyu had reached his limit, and he might be burned down if he walked down, the fire cave in front of him finally opened up, and a fiery stone hall appeared in front of him, and a blood-red flame in the center of the stone hall swayed wantonly, and the aura of destruction was surging, causing waves of fire ripples.

Looking at the strange flames in front of him, Xiu Tianyu took a deep breath, and finally arrived, the swaying blood-red flame in the center of the stone hall was the essence of fire, the Pure World Heavenly Flame.