Boom Boom Boom ............!

Even if Xuantian is in the underground, he can sense the thunder tribulation above the heavenly dome, which is very vast.

He still had the vast majority of the aura essence in his body that could be refined in the future, but he stopped, preparing to comprehend the mystery of thunder in the thunder tribulation.

As for Xiaohu, after absorbing a large amount of aura essence, he burped a few times, and fell asleep directly on the ground.

As for how much aura essence he had absorbed, Xuantian could probably estimate that it should be less than half of the total, and Xiaohu absorbed it faster than him.

And now Xiaohu, because he has never made a move, he doesn't know what realm he has reached, Xuantian only knows that it is above the Dacheng Demon King and below the top Demon King.

No matter what realm it is, after absorbing so much aura essence, cultivation must break through.

Xuantian remembered that when Xiaohu was still a third-level or fourth-level demon beast, his combat power was very powerful, and the challenge of leapfrogging was not inferior to him.

That is a natural combat power, and it should have an important relationship with Xiaohu's bloodline.

Since it is a natural and powerful combat power, then, the current Xiaohu combat power should still be terrifying, and if it is a breakthrough, it should cause a thunderstorm.

Xuantian's sense of thunder is very sensitive, even if he can't see the sky underground, he can sense that there is only one thunder tribulation above the sky.

"Maybe there's something special about Xiaohu, there is no need to cross the catastrophe at all!" Xuantian said in his heart.

Boom boom boom!

In the blink of an eye, a large area of thunder tribulation attacks blasted down from the sky dome, passed through the ground, and directly hit Xuantian.

The thunder tribulation of the peak king of Dacheng is about the same as the thunder tribulation of the king of Dacheng, and there are still a large number of four-fold high-grade thunderbolts and a small number of five-fold low-grade thunderbolts.

However, compared to the previous thunderstorm, the proportion of five-grade low-grade thunder and lightning has increased a bit.

The higher Xuantian's cultivation, the more thunderbolts in the Thunder Tribulation will be, and as his cultivation improves, he doesn't need to go to the Emperor Realm, and maybe the Thunder Tribulation will be full of five-fold lower-grade thunderbolts.

The five-fold low-grade thunder and lightning contain the mystery of the thunder of the fourth-order strength, and the thunder and lightning in the thunder tribulation contain the essence of the mystery.

The mystery of Xuantian's thunder has already comprehended the limit of the third order, and if it goes up, it will break through the fourth order.

Fourth-order mysteries, that can only be comprehended when they reach the quasi-emperor realm, if Xuantian can comprehend a fourth-order mysteries and use the power of mysteries to make up for the power of the spirit body, then he can fight with the top extreme kings.

If he can comprehend the two fourth-order mysteries, then his combat power will increase again, even if he is a top extreme king, he is confident that he can defeat and compete with the quasi-emperor.

comprehending the mystery of thunder in the thunder tribulation, in the whole world, except for the masked man who has the holy tripod of thunder, only Xuantian has this opportunity.

Thunder Tribulation Attack after Thunder Tribulation Attack, Xuantian didn't know it, and with the violent thunder and lightning whipped his body, it would make his spirit body stronger.

Xuantian's mind and soul comprehended the power of the five-fold inferior thunder and lightning in the thunder tribulation, and comprehended the mystery of the fourth-order thunder from it.

Minutes and seconds passed.

The thunder tribulation of the peak king of Dacheng has existed for most of the hour, because it is not a breakthrough in the main realm, it is shorter than the thunder tribulation of the king of Dacheng.

After the thunder tribulation, Xuantian felt very pity.

After more than half an hour of contemplation, he felt that he seemed to be separated from the mystery of the fourth-order thunder.

By piercing that membrane, his comprehension of the mystery of thunder will have a qualitative breakthrough, from the limit of the third order to the early stage of the fourth order.

Although there is only one realm between the third-order limit and the early stage of the fourth-order, it is a big grade difference.

The first, second, and third order mysteries are low-level meanings and belong to the king, while the fourth, fifth, and sixth order meanings are middle-level meanings and belong to the emperor.

The reason why the king of the top limit has comprehended the fourth-order mystery is called a quasi-emperor is because he has already obtained a little power of the emperor.

Otherwise, no matter how much the king of the top limit cultivates the spirit body and martial soul to the limit of the third order, he will not be called a quasi-emperor.

Although Xuantian is a pity, he is still excited!

He immediately began refining the aura essence in the dantian.

His cultivation has broken through to the peak of Dacheng, and he has only refined a small part of the aura essence, and most of it has not been refined.

The remaining aura essence was enough for him to consolidate the cultivation of the peak king of Dacheng to the extreme, and then, impact the peak king of Dacheng.

As long as the impact on the Dacheng Limit King succeeds, he will experience another thunder tribulation, and Xuantian believes that he will be able to pierce that membrane and break through the comprehension of the mystery of thunder to the fourth order.

In this way, except for the quasi-emperor, there is no strong person in Tianzhou who can pose a threat to him, even if it is a top extreme king at the sect level of the head of the family, he can fight.

The aura essence was quickly refined, turning into strands of extremely pure energy, some of which were transformed into Gangyuan, making Gangyuan more and more vigorous, and some of which flowed to the limbs and hundreds of remains, making the second-order peak spirit body more and more powerful.

Soon, more than ten minutes passed, and the aura essence in Xuantian's body was about to be refined to the end, and his impact on the Dacheng Limit King had also reached the most critical juncture.

The Gangyuan in the body has been extremely strong, surging to the extreme, and has reached the limit.

His second-order spirit body had also been strengthened to a critical point, and in his dantian, there were still two fist-sized balls of spiritual energy essence that continued to be refined.

A smile appeared at the corner of Xuantian's mouth, his second-order spirit body could no longer withstand so much pure energy, and the critical point of the second-order spirit body was about to break through.

The aura essence in the dantian was enough for his cultivation to break through to the limit of Dacheng.

Sure enough, after less than ten breaths, Xuantian's power suddenly exploded rapidly, and the spirit body once again made qualitative progress, breaking through from the peak of the second order to the limit of the second order.

Boom Boom!

Xuantian once again sensed the coming of the Thunder Tribulation.

Soon, Xuantian refined the spiritual energy essence in the dantian to a complete extent, and consolidated the spirit body of the second-order limit a little.

Then, he calmed his mind and prepared to comprehend the mystery of thunder again in the thunder tribulation.

In a few moments, there were a large number of thunder tribulation attacks, passing through the earth and attacking Xuantian.

In this thunder tribulation, sure enough, the proportion of fifth-grade thunder and lightning was a little more, and the mystery of the fourth-order thunder contained in the thunder tribulation was even more profound, making it easier for Xuantian to comprehend.

Minute by minute, Xuantian concentrated.

Although the mystery of thunder is only a thin layer of film away from the fourth order, if you can't break this film, it is the limit of the third order, and if you break it, it is the early stage of the fourth order, which is very important.

Many top limit kings, the mystical comprehension has reached the limit of the third order, but they can't break that membrane, so they can't be regarded as quasi-emperors.

Xuantian comprehended the mystery of thunder in the thunder tribulation, and the effect was obviously much greater than that of everyone, so although it was not easy to pierce that membrane, it was not too difficult for Xuantian.

About half an hour later, two-thirds of the way through the Thunder Tribulation, a flash of inspiration flashed in Xuantian's mind, and the Thunder Sword Soul suddenly increased and exploded.

From three to four, four times the initial size.

Xuantian's comprehension of the mystery of thunder finally pierced through that membrane, from the limit of the third order to the early stage of the fourth order.

The Thunder Sword Soul also turned into a fourth-order Sword Soul, increasing by a bit, and its strength increased greatly, leaning towards the center of the eyebrows a lot.

The Chaos Yuan God in the center of the eyebrows leaned towards the Flame Sword Soul, and the Flame Sword Soul at the peak of the third order was squeezed to the edge of the space in the center of the eyebrows.

The thunder tribulation did not cause any damage to Xuantian, and he survived safely, and Xuantian always comprehended the mystery of thunder until the end of the thunder tribulation.

His current Thunder Mystery had only just reached the early stage of the Fourth Order, and he was not yet profound, and he needed to work harder if he wanted to exert his powerful strength.

After the tribulation, Xuantian stood up, revealing a cheerful look on his face.

This time, Xuantian was simply a great gain, not only did he obtain the inheritance of the Emperor's Heavenly Eye, but his cultivation also broke through two realms in a row.

Even if he cultivates with his heart, in a year's time, he may be able to break through to the peak king of Dacheng, but it is absolutely impossible to become the peak king of Dacheng.

The dragon vein left to him by the Heavenly Eye Sword Emperor allowed him to obtain great benefits.

Moreover, most of these aura essences were also absorbed by Xiaohu, otherwise, if all the aura essences were absorbed by Xuantian, his cultivation might directly break through to the top king.

However, Xuantian didn't feel a pity, being able to ascend to two realms in a row was already a great benefit, and it was not good for a martial artist to rely on external forces to improve several realms in a row, it would cause an unstable foundation, which would have an impact on future cultivation.

The cultivation of the King Realm is the foundation of the Emperor Realm, and the cultivation of the Emperor Realm is the foundation of the Emperor Realm, and it must have a solid foundation in order to be able to go far.

Although pulling seedlings to help grow can be seen in a short time, in the long run, it is definitely not a benefit.

Xuantian has risen to two realms in a row, and he needs to precipitate it well, completely consolidate his cultivation, and then break through.

It was only at this time that Xuan Tian opened the Imperial Dao Heavenly Eye and took a good look at the cave hall.

As soon as the Emperor's Heavenly Eye opened, he saw that five or six thousand meters, unobstructed, this was no longer the underground of the Prison Dragon Mountain, because he did not see any formation.

Outside the cave hall where he was, there were all ordinary mountain stones, and there was nothing special about it.

He looked up again, and saw that two thousand meters above, there were passages connecting the cave halls, which felt very familiar.

A few hundred meters further up, Xuantian saw a piece of water, a large lake.

Xuantian instantly recognized it, it was the Spirit Realm Lake, and the passage and cave hall below the Spirit Realm Lake were the dragon veins that he and the younger generations of the good and evil sides had entered in the past.

It was in the dragon vein that Xuantian obtained the guidance of the Heavenly Eye Sword Emperor, and then went to the Prison Dragon Mountain to obtain the inheritance of the Imperial Heavenly Eye.

As a result, the teleportation array in the stone chamber at the bottom of the Imprisoned Dragon Mountain transmitted him back to this dragon vein.

However, his location, unlike the dragon vein he had been to last time, was still further underground, three thousand meters above the ground, and there were also a lot of spiritual energy essences here.

This is just an ordinary underground, there is no formation shrouded, with the strength of Xuantian, three thousand meters underground, you can break the mountain rock and rush out at any time. (To be continued)