Xiao Jin and Da Hei outside didn't seem to hear any sound, but after Lu Kun's mana rushed into the bone marrow cavity, they suddenly felt something, and turned to look west.

Both apes showed unbelievable expressions, if there were immortal cultivators outside this double-headed peak, they would find that the demonic qi on the western demonic peak seemed to be stimulated in some way.

For a while, it squeezed away the rich aura of the eastern mountain peak, turned into a long river of demonic energy, and rushed towards the eastern mountain peak, the place where Lu Kun retreated.

Next, the two demon beasts stared at each other sluggishly, and the demon qi was like a hungry tiger pounced on food, and it slammed into Lu Kun's body.

At this time, all of Lu Kun's nerves were filled with a tingling and tingling sensation in the bone marrow cavity, and his divine consciousness was also a little muddy in the roar of his soul, and he couldn't feel this demonic qi at all.

And the demonic qi that entered his body, as if it had a purpose, entered the bone marrow cavity without hindrance through the bone crack that Lu Kun had broken through before.

And then......

Then it disappears into the bone marrow cavity.

Xiao Jin, who sensed this situation outside, was stunned, as if he had become stupid, and it could understand the situation when Lu Kun broke through the bottleneck before, but the scene at this time was beyond its cognition.

Even if Lu Kun used the demon attraction technique, it was impossible to attract the demon qi through the rich aura, you must know that there is a rejection between the aura and the demon aura, even if it is Xiao Jin's bloodline, there is no guarantee that he can absorb the demon qi on the opposite side here.

And what made Xiao Jin sluggish the most was that these demonic qi entered Lu Kun's body, neither stored nor turned into other energy, and completely disappeared without a trace.

This is completely beyond its comprehension.

Next, under the paralyzed eyes of Xiao Jin and Da Hei, this scene lasted for a day and a night before disappearing.

It is also thanks to the place that Lu Kun chose was originally mixed with this aura and demonic energy, and after such a long time, there were no immortal cultivators who discovered it.

And after this vision disappeared, Lu Kun's soul gradually became a little sober, as if this day and night were just a moment for him.

But he did hear this roar, and he was still very familiar with this voice, it was the roar when the blood marrow powder was refined, and the pseudo-magic weapon was formed.

It is the blood containing the essence blood of the golden giant ape, and the vision produced when it is successfully refined!

"Could it be that my mana rushed into the bone marrow cavity, which means that I have refined some blood?"

Lu Kun shook his head, and did not continue to recall the roar, but continued to manipulate the mana of his body, wanting to fill the bone marrow cavity with mana.

After he broke through the diaphragm outside the bone marrow cavity before, it was as if a gap had been opened, and the mana in the bones entered the bone marrow cavity without any barrier.

After three days, with the assistance of the rich aura around him, all the bone marrow cavities in his body were filled with mana, and the aura exuded by Lu Kun was even more powerful.

Under the perception of Xiaojin outside, he has completely reached the feeling of the middle stage of foundation building.

Lu Kun naturally felt this, and his heart relaxed, which showed that he had indeed broken through the early stage of foundation building, but he did not stop the exercises, but continued to operate the thunder attribute mana.

Although after the breakthrough just now, the bone scars in the body have been repaired, but they have not yet reached the strongest state.

Therefore, in the following time, Lu Kun is to recover all the damage on the one hand, and on the other hand, it is to really refine blood.

You must know that for ordinary mortals, the time for the blood in the body to rotate is about twenty days, but for an immortal cultivator with a strong physical body like Lu Kun, the time will be much shorter, almost three to five days.

Although Lu Kun has reached the middle stage of foundation building, according to Lu Kun's understanding of physical cultivation, his realm at this time has not yet stabilized, because the blood in his body is still the blood in the early stage of foundation building.

He had speculated before that after the bone marrow cavity was filled with mana, the newly produced blood should also carry mana.

After about half a day of running the exercises, the injuries in Lu Kun's body completely recovered, because this time the injuries were only muscles and bones, and these parts with mana were damaged.

The internal organs are intact under the defense of its thunder shield, so they heal quickly, and before being attacked by the wind spirit son, his internal organs have been shocked, and he can only rely on the spiritual energy to nourish him, and the treatment time is relatively long.

And in this half a day, Lu Kun's blood gradually changed a lot, and a little mana aura appeared.

You must know that after the blood is generated, it first flows out through the veins deep in the bones, and gradually spreads throughout the body, with the help of these mana-carrying blood, Lu Kun's recovery power is further strengthened.

And in this half a day, Xiao Jin outside had a different feeling, in addition to being able to sense the situation in Lu Kun's body, it was also able to distinguish the changes in Lu Kun's mana outside.

The little monkey clearly felt that the mana in Lu Kun's body had risen a little, and he didn't look like a monk who had just entered the middle stage of foundation building.

In the next few days, not only Xiao Jin, but even Da Hei, who was a little slow to react, could feel that the mana aura on Lu Kun's body was getting stronger and stronger.

It wasn't until the fifth day that Da Hei, who was a little numb, felt the rapidly growing mana stop his head, and the chimpanzee felt this obviously increased mana, and the corners of his mouth couldn't help twitching.

Da Hei has a strong talent, when he was at the third-level demon beast level, to increase these amounts of mana, even with the help of the demon qi of the demon island, it would take at least half a year.

And Lu Kun completed it in five days.

Xiao Jin's monkey face was a little surprised on the first day, and he was immersed in thinking for the next few days, and he discovered the source of Lu Kun's mana deepening.

It was the inner blood of his body, and these newly increased mana were completely the extra part of Lu Kun's blood.

Just when Xiao Jin thought that Lu Kun had completed the breakthrough and was about to finish, it suddenly sensed that the surrounding aura continued to pour into Lu Kun's body, and the mana contained in the blood continued to increase.

The little monkey remembered that Lu Kun had told him that the blood of his body cultivation was rotated in about five days, and when he pressed it, it was over, why did his mana continue to grow.

Could it be related to the demonic aura that disappeared strangely before?

Xiao Jin couldn't help but think like this in his mind.

the second five days;

the third five days;

......

It wasn't until the ninth five days, forty-five days later, and after nine rounds of blood replacement, Lu Kun finally stopped absorbing the aura.

And the mana in his body at this time had already reached the peak of the middle stage of foundation building in the numb eyes of the two demon beasts.

Lu Kun's muscle mana is all transformed from aura, and it has been purified by the thunder seal, which is very pure, so the mana aura emitted alone is not weaker than any late-stage foundation building monk.

Lu Kun opened his eyes, a smile of excitement appeared on the corner of his mouth, looking at Xiao Jin and Da Hei in front of him, a fierce power of qi and blood was stimulated from him.

The two demon monkeys felt in a trance that there was a domineering and powerful ancient demon ape standing in front of them, Da Hei felt the power of this qi and blood, and directly pounced, lying on the ground, his eyes flashing with awe and excitement.