On the fifth layer of the Flowing Flame Sandland, in a stone room at the bottom of an unknown Earth Lung Fire Pool, Yang Kai sat there quietly with a strange expression.

Although he looked exhausted and about to collapse, Yang Kai's eyebrows still had excitement and joy that could not be hidden, and the Saint Yuan fluctuations that slowly emanated from his body were also clearly a sign of a great improvement in the cultivation realm.

It had been more than a month since he had refined Xuanyin Kwai Water, and it wasn't until yesterday that he finished refining.

He didn't expect it to take such a long time, and in the process of refining, there were many unexpected things.

The cold power contained in Xuanyin Kwai Water was too powerful, and the various spirit herbs and elixirs he had taken before, coupled with the fire in the center of the earth that had been drawn by the prohibition of the two stone piers, could not suppress the cold of the Xuanyin Kwai Water, making the cold and hot forces in his body unbalanced, and as a last resort, Yang Kai could only open the prohibition of the third stone pier, so that the power of the fire in the center of the earth would be much stronger.

I was thinking of using the power of the fire in the center of the earth to balance the Xuanyin Kui Water, but who knew that after the prohibition of the third stone pier was opened, the power of the Xuanyin Kui Water was completely suppressed, and the scorching power in the body became vigorous.

Yang Kai was ruthless and took the second drop of Xuanyin Kwai Water, and then he reluctantly found that the initial situation appeared again.

As a result, after getting the most outrageous, the prohibition of the four stone piers was all opened by him, and the fire power of the center of the earth was fiercely extracted, and finally the cold and hot forces in the body barely maintained a balanced state.

However, in this way, the risks and sufferings that Yang Kai endured increased almost geometrically. During this long month, he wandered in front of the ghost gate several times, and almost failed.

The strong physical body and tenacious divine sense played a vital role at the critical moment, and the kind of supreme golden blood accumulated in his body, Yang Kai also had to use a few drops to repair his injuries, otherwise he would not have been able to hold on at all, and he would have been killed by the power of the Xuanyin Aoi Water and the Fire of the Earth's Heart a long time ago.

Although there were many good things, the final result was also much beyond Yang Kai's expectations.

At that time, Zong Ao praised the Xuanyin Kui Water to the heavens, but there was no one on the ground. Yang Kai thought it had such a powerful effect. Originally, he hoped to be able to use this refining to directly break through to the level of the Saint King Three-Layer Realm, and even touch the threshold of the Returning to the Void Realm, but now his cultivation is only the peak of the Saint King Two-Layer Realm.

Two drops of Xuanyin Kwai Water, so many rare spiritual herb pills. Add to that the power of the fire in the center of the earth here. Only promoted him to a small level.

Although the realm cultivation has not increased much. But Yang Kai had another gain.

After pondering for a while, Yang Kai opened his hand, and a pitch-black demonic flame was like a burning fireball. Floating on the palm of his hand, the Demon Flame did not look the same as before, but it did not have the kind of alternating cold and hot, good and evil aura fluctuations, anyone who used his divine sense to investigate, it was just a fireball that looked a little strange and evil on the outside, and it didn't even have a little temperature.

But Yang Kai just moved, this group of demonic flames emitted a cold and biting aura, accompanied by a clattering sound, the entire stone room was instantly filled with a layer of frost, there was a terrifying momentum that was frozen for thousands of miles, and even the stone wall was frozen hard, clicking, being arranged in this stone room, autonomously playing a protective role, waving layers of halos, hindering the spread of the cold artistic conception.

Yang Kai's mind turned again, and the icy chill disappeared, replaced by an endless scorching heat gushing out of the demonic flames, the frost that had spread before disintegrated at this moment, and disappeared, the power of the heat was unstoppable, and the protective prohibition in this stone room didn't have time to react, and suddenly there was a click, and a layer shattered.

Yang Kai showed a look of satisfaction, and with a slight grip, the Demon Flame Black Ball in his hand disappeared.

He also realized that after refining two drops of Xuanyin Kwai Water, the main reason why he couldn't improve his cultivation realm too much was that his Demon Flame had absorbed most of the energy.

When the Xuanyin Aoi Water and all kinds of hot forces reach a balance in his body, it stands to reason that the power of these two conflicts will stimulate his realm to grow wildly, but there is such a strange thing as the Demon Flame in his body, which also coexists with heat and cold, so he can accept the medicinal effects of the Xuanyin Aoi Water and those herb pills, making the Demon Flame even stronger.

When the Demon Flame was first born, until more than a month ago, it was a state of coexistence of cold and heat, sometimes cold and sometimes hot, although it was mysterious and unpredictable, but Yang Kai, as the master, could not control its state change at all.

But now, Yang Kai was able to do this, and while the power of the Demon Flame had increased significantly, the compatibility with himself had also increased a lot.

In the future, when he fights the enemy, he will be cold if he wants to be cold, and if he wants to be hot, this artificially controllable demonic flame will be far more lethal and threatening than its own transformation.

Overall, Yang Kai was still very satisfied with this refining. As early as when the Demon Flame was born, Yang Kai knew that his strange power had a strong shaping and growth.

Unfortunately, he couldn't figure out how to make the Demon Flame grow, and no one could tell him that.

This time by chance, he found a way.

As long as it can balance the heat and cold, form an external force, and then let the demon flame fuse, it can promote its growth.

It seems that the remaining Xuanyin Kwai Water is not useless, Yang Xingxing secretly thought about it.

He was still thinking about what to do with how to deal with so much Xuanyin Kwai Water, and it would definitely not work to sell it, everyone knew the truth of his guilt, and it would be too tyrannical to put it away.

And now, Yang Kai has a good way.

As long as he collected a large amount of Yang-attribute fire-attribute spirit herb elixir, he would even be able to refine Xuanyin Aoi Water for the second and third degrees, making the power of the Demon Flame even stronger.

Of course, this is just an idea, and it is not yet known whether it will be realized.

If it weren't for the fact that time didn't allow, Yang Kai would be willing to refine some more Xuanyin Kwai Water to test it, but unfortunately, more than five months had passed since he entered the Flowing Flame Sand, and it was not far from half a year, so he could only put this idea aside for the time being, and find a way to verify it in the future.

He was only afraid that in the future, he would never be able to find a refining environment as good as the Earth Lung Fire Pool here, after all, once the Flowing Flame Sand was opened underground, he didn't know that the Wandering Sand was a matter of the Year of the Monkey.

After meditating for a day, Yang Kai recovered, stood up, turned his head to look around, took down the four round balls that emitted soft light embedded in this stone room, and threw them into the space ring.

These glowing balls should not be ordinary things, take them back and place them in the residence, not only can calm the mind, but also optimize the environment, of course he will not miss it.

After making sure that nothing was missing from this stone room, Yang Kai left and walked out along the long passage.

Soon, Yang Kai walked out of the passage and stood at the entrance of the wall cave, staring intently at the wall hole on the left, a sneer on the corner of his mouth.

More than a month ago, he suffered a big loss under the hands of that instrument spirit, if he hadn't cultivated the spatial power, he was afraid that he would die on the spot at that time, but now his cultivation realm has improved by a small level, and he has completely mastered the hot and cold changes of the demon flame, so he naturally wants to take revenge.

Possessing a refining furnace with a machine spirit, Yang Kai said that it was fake not to be blushing, if it was possible, he naturally wanted to subdue the other party.

However, that machine spirit is not something to provoke, even if Yang Kai is a little confident, he has to sum it up, and this battle must be resolved quickly, God knows when the Dao Liuyan Sandland will be closed, don't be inseparable from that machine spirit, it will not be good to be suddenly teleported out.

After pondering for a long time, Yang Kai's body shook and rushed directly towards the opposite wall hole.

Being in mid-air, the firepower in the Lung Fire Pool below enveloped his whole body, and the energy that was so dense that it was visible to the naked eye scorched his body, and a layer of demonic flames outside Yang Kai's body burned, exuding a cold and piercing coldness, although it could not be said that it was easy to block the scorching heat, but it was not very difficult.

Yang Kai's expression was overjoyed, and he immediately knew that his demonic flame was indeed very powerful, and the last time he rushed over, he was still cautious and vigilant, but he didn't expect that this time he didn't need to care too much at all.

In the blink of an eye, Yang Kai came to the hole in the wall on the left, and walked inward with ease.

Hundreds of zhang passage, Yang Kai walked quickly, from beginning to end, the instrument spirit was unresponsive, until Yang Kai's figure appeared in the stone room again, the refining furnace in the center suddenly hummed, the surface glowed red, the fiery red monster bird let out a sharp chirp, and the elegant body suddenly rushed out from the surface of the furnace.

In an instant, the temperature of the entire stone chamber skyrocketed and turned red.

This machine spirit is obviously very grudgeful, the last time Yang Kai escaped, he was secretly annoyed for more than a month, and now seeing Yang Kai rushing in again without knowing whether he is alive or dead, he immediately wants to attack, ready to teach him a lesson.

This was also in line with Yang Kai's intentions, his body shook, and a layer of cold demonic flames churned, resisting the other party's scorching breath at the same time, his hand shook, he had already held a Heaven Killing Spear, and threw it towards the red firebird with all his strength.

The crimson firebird chirped angrily, as if it was annoyed that it was being underestimated, and with its pointed beak, a large wave of fire erupted from its mouth, attacking Yang Kai with a monstrous momentum.

Yang Kai sneered, he didn't have any idea of dodging at all, and threw the Heavenly Punishment Spear that broke through the fire wave directly, and at the same time, the spear twisted for a while, turning into a pitch-black dragon, opening its black mouth, and a large amount of cold demonic fire erupted from its mouth, resisting the heat wave at once.

After several battles, Yang Kai already had some experience in the use of the Yuan Control Technique, and he could easily control the Saint Yuan that he had struck out and turned it into all kinds of attacks.

I have to say that this Yuan Control Technique that I realized with the help of the Red Candle Fruit Maturity was really huge in battle, and this move alone increased Yang Kai's combat power by at least two percent. (To be continued......)