The diffuse yin qi is not very heavy, and these yin qi are also under some kind of control, it does not surround more than two meters above the ground, and remains active below two meters all the time, floating, constantly surging, and then some of it will sink back into the ground, and new ones will float out.

Xie Aoyu sensed such a little bit of yin qi, it was still very mixed, not pure, it was actually able to make the combat power react, revealing signs of advancement, if it was condensed and purified, wouldn't it be possible to directly let the combat power complete the advancement.

The biggest reliance on the challenge of leapfrogging is combat power!

The combat power is ten times that of other people's fighting spirit, and naturally they can cross the tenfold gap to compete with them, and then kill the enemy, which is the most effective way to make up for the gap.

But killing people by skipping the level is not as simple as imagined.

For example, there is a gap of more than nine times between the lower position of Xuanzun and the middle position of Xuanzun, but the peak of Xuanzun lower position and the lower position of Xuanzun is close to the gap between the middle position of Xuanzun, that is, the distance is nearly eight times, that is to say, Xie Aoyu, who has just entered the lower position of Xuanzun, even if he can jump over the level and kill the middle position of Xuanzun, he must be a master who has not been in the middle of Xuanzun for a short time, if he is facing a strong person at the peak of Xuanzun median, the odds of winning will not be too great, and he must rely on various combat experience and powerful fighting skills to make up for it, and he may even have to pay some price, or use spiritual storm.

But in this Hell Demon Realm, the spiritual storm is obviously not a last resort, and the same is true of the top fighting skills, which are his trademarks, and there are even more Moonfall Divine Blades and Silent Annihilation Fists that cannot be used.

With so many restrictions, he can only rely on combat power.

After all, there are also some people in the deep sea area who have advanced their fighting spirit, and there are such a huge Hell Demon Realm, and it is not too much to say that there are some advanced fighting spirits.

Therefore, under the huge restrictions, it is almost impossible for Xie Aoyu to eat all the Xuanzun middle masters with the Xuanzun median, unless he reaches the peak of the Xuanzun lower position, he is absolutely sure.

Even if he cultivated in the belly of the mountain with Ruyan and cultivated to be refined, it can be said that he has made great progress in the lower position of Xuanzun, but there is still a very huge gap from the peak of the lower position of Xuanzun.

It's like a tenth-order battle emperor, if you want to break through, it's very difficult.

But if the combat power can be advanced, it can continue to make up for this problem.

"It must be advanced!" Xie Aoyu felt those yin qi and immediately made a decision.

The advancement of combat power is a very big problem, even the hell demon qi needs to be purified and turned into the origin qi of the hell demon realm, of course, that kind of advancement may be large, such as increasing from ten times the power to thirteen times, or even fourteen times, but after all, it is difficult to find, even if this kind of yin qi is not greatly improved, but it is also very effective.

These yin qi floated only two meters high, but the kind of yin and cold qi they produced was very amazing, even if the group felt it and flew away into the air, but the cold feeling still made them feel a chill to the bone, except for Xie Aoyu and Ruyan's strong physique, everyone else needed to protect themselves, and the two of them were also defending themselves in order not to look different.

Xie Aoyu slowly lowered his body.

He wanted to see if this Yin Qi could promote the improvement of combat power 100%.

As a result, as he descended, the cold aura increased rapidly, if his supreme body didn't feel anything before, now he felt the coldness, so those Xuanzun lower masters came to this position, I am afraid that they would be frostbitten at that time.

Xie Aoyu felt that the combat power was boiling abnormally.

It shows that the yin qi is enough to meet the advanced ones.

With his eyes locked on the people in front of him, Xie Aoyu wanted to make sure they didn't notice his actions, and at the same time check the so-called Bone Demon area.

The Bone Demon area is very large, covering an area of more than a hundred miles.

Xie Aoyu didn't immediately take action to take Yin Qi, after all, in that case, once an accident happened, they would be in the Bone Demon area, and if they were attacked, it would be dangerous, and no one could guarantee that there would be no Immortal Realm Bone Demon in this Bone Demon Area.

It flew more than seventy miles.

According to Xie Aoyu's inference, it will take at least half an hour to leave the bone demon area at this speed, and he can start it.

He grabbed it.

Grabbed about a cubic meter of yin qi at one time, the amount was not much, and the soul power mixed in it was also very rare, Xie Aoyu knew that it should be the soul of the sleeping bone demon, and he immediately drove it out, so as not to wake up the bone demon.

After obtaining these yin qi, Xie Aoyu quickly refined it.

Getting the Hell Demon Qi given by the Great Demon King failed to purify it to the point of Origin Qi, but it allowed Xie Aoyu to learn the method of refining when he asked for advice from others.

It's also simple, the combat power is pouring into it, and the impurities are driven out, but it is difficult to do it if you don't understand the method.

After refining, the amount of these yin qi was sharply reduced by seven times, and only a small group remained, Xie Aoyu felt the activity of his combat power, so he secretly took it again.

Keep refining.

This is repeated, a total of ten times before and after, and the amount of Yin Qi that has been refined has reached a considerable level, and Xie Aoyu also feels that it is almost there.

"You two are protecting the Dharma for me. Xie Aoyu said in a low voice.

The two women nodded slightly, they floated in front, each exerting their strength, supporting Xie Aoyu's body and flying forward, which seemed to outsiders as if Xie Aoyu was flying by himself.

Xie Aoyu began to integrate that yin qi into his body.

Yin Qi enters the body, immediately merges with the combat power, and then through Aoyu's physical practice, it is quickly refined, forming a new Yin and cold aura, and then integrated into the combat power again, which can promote the completion of an advance in combat power.

It's easy to say, but it takes some time to do.

Little by little, time passed.

At first, it didn't matter, when Xie Aoyu's cause was tempered and fused with combat power again, the yin qi had reached an unimaginable purity, and the chill released had also reached an astonishing level, making Xie Aoyu's body seem to have an incomparably cold aura emanating out, making the two women a little unable to resist, and they used their strength to resist, and there was a trace of cold aura that collided with those yin qi coming out of the ground.

It didn't matter if it was touched, the originally calm yin qi that could only move within two meters suddenly burst out as if it had eaten a great tonic pill.

"Boom!"

The earth roared and shook.

The yin qi that originally seemed to flow slowly suddenly and violently tumbled, and the yin qi that came out of the underground swamp also increased from about one percent of the original strength to ten percent in the blink of an eye, and suddenly the yin qi within two meters became extremely dense, and even formed a gray mist, and it was rapidly increasing, looking like a thick fog.

"The sky is full of fog, the bone demon has awakened, go quickly!" Shen Tianming saw this, his face changed greatly, and he burst into a loud shout, suddenly increasing his speed and rushing out into the distance.

Before his words fell, he saw that after reaching a certain level, those yin fogs suddenly burst out as if they had broken through the limit of two meters, and in an instant, the yin fog was a thousand meters high in the sky, and it was in contact with the area of the furious soul power at a height of a thousand meters, so that all the space was poured into the yin mist.

The fog was thick, and the cold breath rose sharply.

The coldness of the breath has reached an unimaginable level, if it is measured, I am afraid that it will reach the point of 100,000 degrees, which is enough to freeze any war emperor to death, even the ice dance feels the uncontrollable cold, as if the cold wind has the ability to penetrate the skin and flesh, can penetrate into the bones, and freeze the human bone marrow.

As strong as Xie Aoyu, he also felt the chill.

It's just that he has a supreme divine body, this kind of chill is not taken to heart at all, at the beginning, he has gone through a lot of flames, thunder and lightning to forge his body, that kind of pain can be bearable, such coldness has no influence on Xie Aoyu, it is completely negligible.

Especially this time, Xie Aoyu's combat power suddenly grabbed a large amount of Yin Qi, and all of a sudden, the amount of purest Yin Qi that was quenched was greatly improved, and then integrated into the combat power.

Xie Aoyu's combat power immediately improved.

This kind of advance speed is still extremely fast, but in just a few seconds, Xie Aoyu's combat power has changed, the overall quantity has not changed, but the quality has changed.

With his familiarity with combat power and fighting spirit, Xie Aoyu does not need to test, just a little inspection, he can conclude that the current combat power is already eleven times the strength of the fighting spirit, and it seems that it has only been enhanced, but don't forget that the yin qi is so cold that Xie Aoyu's supreme divine body feels the chill, which is integrated into the combat power and promotes transformation, which naturally makes the combat power exude a chill, with the effect of attacking the enemy, and the power of the real combat power is much more powerful than this so-called arithmetic.

After completing the advancement of combat power, Xie Aoyu couldn't help but let out a low whistling sound.

Excited.

The trip to the Hell Demon Realm, it seems that there are really many things that can make its combat power advanced, and for the achievement of divine power, it will no longer be a fantasy, it can really be completed.

Speaking of which, there are many places in the human world that were once giants like the Ice Demon Valley, but they are either impossible to find or sealed, and it is difficult to find, but in the Hell Demon Realm, it can completely meet Xie Aoyu's requirements, and the advancement of combat power is only the beginning.

"Don't resist, I'll help you advance your combat power. Xie Aoyu said in a low voice.

This Yin Qi can even promote his combat power to advance, so Ice Dance and Smoke Nature can even more.

One of the two of them is five times the power of the fighting qi, and the other is more than six times the power, if they experience the help of yin qi, they may even be greatly improved, after all, Xie Aoyu's improvement is less, it is relative to himself, and if he puts it on the two women, it is a very big improvement.

The two women nodded in agreement.

They immediately let go of themselves, Xie Aoyu put his hand on the shoulders of the two women, urging the power to grab the rich yin qi into the body, and at the same time, the speed also increased, and quickly rushed to the outside world of this bone demon area.