Back in his room, Zhang Xiaoyu took out the heart core he had taken from the exchange office.

The heart core exchanged by Wuda here is different from what he got before.

According to what Pi Chengxian said, because these heart cores were obtained by a special method, they contained all the essence of a demon beast.

And Zhang Xiaoyu hunted demon beasts before and also obtained heart cores, but those heart cores were overflowing, and the calories they could provide were naturally limited.

Of course, after the demon beast was killed, Zhang Xiaoyu did not lose much calories as long as he ate the meat of the demon beast.

The system determines calories, and it is also based on the grade of the monster.

Among the four-grade demon beasts, the beast emperor-level demon beasts can basically provide tens of thousands of calories.

And the monster beasts at the level of the beast general can provide a limited number of calories.

Zhang Xiaoyu roughly estimated that these heart cores in his hands should be enough to provide more than 400,000 calories, enough for his own cultivation for a period of time.

He has only been tempered twice by the six internal organs now, and the five internal organs have not yet begun to be refined, let alone the heart alone.

In the previous 100,000 calories, the first tempering used less Yuan Power, but the second time it was greatly improved.

Zhang Xiaoyu estimated that starting from the third time, refining once would require at least 40,000 yuan power.

And his goal, naturally, is to quench his bones ten times perfectly.

Ten times, according to the current situation, the last eight times need more than 300,000.

"I hope these yuan forces are enough for me to complete the refining of the six intestines, as for the heart and other organs, when the refining of the six organs is completed, let's go to the wilderness area again." ”

Zhang Xiaoyu muttered to himself, then stopped thinking about it, and soon began to swallow the heart core.

The demon beast enters the fourth grade.

Like the Terran warriors, there will also be a qualitative change in strength.

Just like the Terran warriors, below the Battle Emperor Realm, cultivate the power of qi and blood, above the Battle Emperor Realm, cultivate Yuan Force, and the Grandmaster Realm begins, cultivate the power of the Law Phase.

In fact, the power of the law is also a kind of yuan force.

After the demon beast enters the fourth grade, the original demon spirit power will also evolve and become the demon yuan power.

Therefore, when swallowing the demon core, the demon spirit power contained in the demon core itself can have a tempering effect.

And just like the original gene stock.

A demon core can exert two effects, not only allowing the system to collect calories, but also using these demon yuan power to temper the body.

Zhang Xiaoyu also had no intention of giving up these demon yuan powers.

Time is running out now, and all the power that can be used cannot be wasted.

Swallowed five demon cores in a row.

Zhang Xiaoyu felt that the mottled energy in his body had reached saturation.

At this moment, all the meridians are furious demon yuan power.

Demon beasts are different from humans.

Demon beasts have attributes.

And these demon cores that Zhang Xiaoyu exchanged this time did not belong to the same demon beast, which also led to the fact that the demon yuan power integrated into his body was too mottled and messy.

Zhang Xiaoyu had not found this shortcoming before.

At this moment, his brows couldn't help but furrow.

With so much chaotic energy, it is a problem to absorb it when it is suddenly integrated into the body, let alone use this energy to refine the body.

At this time, Zhang Xiaoyu only had two choices.

The first is to release all of this energy.

It's simple.

You only need to release some tactics indiscriminately, and the energy will always run out.

Of course, these mottled energies contain other things, which need to be slowly refined afterwards, not to mention the time it takes, and these energies will also be wasted.

This is what Zhang Xiaoyu does not want to see.

The second is to repurify these energies and then refine the body.

This will waste some energy, but it will come in handy.

This method sounds simple, but in reality, it is not.

Five demon cores, from five different demon beasts.

What's more, what's even more fucking up is that there are three of the demon beasts that actually have attributes.

At this moment, in Zhang Xiaoyu's meridians, there was a flame, a golden light, and a green light.

There are three kinds of light clusters, which belong to the three different properties of fire, metal, and wood.

Moreover, although these demon beasts are alive and dead, some of their souls remain in the demon core.

Of the three light clusters, the fire attribute is the most powerful, while the other two are relatively weak.

This is related to the concentration of the essence itself, and it is also related to the cultivation and grade of these demon beasts before their death.

At this moment, these three light clusters, no one is convinced, and they are constantly scurrying around in Zhang Xiaoyu's meridians, making his whole person look constantly changing colors.

Zhang Xiao was helpless.

Even if these demon beasts have some skills, they are not afraid at the moment.

The problem is that the energy is mottled, and these demon beasts are running around, so he can't refine them at all.

Unless he wasted time refining the demon yuan power of three different attributes in turn, he didn't want to accept that it took too long.

Zhang Xiaoyu thought about this, and suddenly thought of something.

Flame of the Burning Sky.

He hadn't used his three-rank ability much since he got it.

Burning Flame, which has a total of three effects.

Amplification, purification, incineration.

Zhang Xiaoyu suddenly thought at this moment, if he used the Burning Sky Flame, would he be able to purify these mottled energies?

It should be ok.

Thinking of this, Zhang Xiaoyu began to get excited.

"I'm a genius, I can think of it. ”

Just do it.

Soon, Zhang Xiaoyu no longer paid attention to these light clusters.

The three attributed light clusters and the two non-attribute light clusters are still scurrying around at the moment.

And that fire-attribute group of light actually began to chase, as if it wanted to devour other light clusters.

Zhang Xiaoyu sneered.

Immediately, the Burning Sky Flame was unleashed.

The flames, because they were refined by himself, could be collected into the body, and could also drive the wounded enemy.

At this moment, Zhang Xiaoyu did not release the Burning Sky Flame, but took it into his body.

In the meridians, as the Burning Sky Flame appeared, the previous crimson light suddenly glanced back, and then, in a frightened manner, fled forward.

"Where to run?"

Zhang Xiaoyu let out a low cry in his heart, and then, manipulating the flames, chased forward.

Just kidding, this is his own body, he is the master, and the size of the battlefield is not up to him.

Soon, the meridians in front of him suddenly narrowed.

The crimson flames had no way to escape, and they burst open with a bang, and began to impact Zhang Xiaoyu's meridians.

However, after entering the War Emperor Realm, Zhang Xiaoyu's meridians had already become extremely hard, how could this small flame be helpless.

Soon, the flames behind him caught up with the crimson light in front of them.

As a third-grade ability, the Burning Sky Flame itself was integrated into a cloud of extraterrestrial divine fire, and almost instantly, it engulfed the crimson light cluster.

And several other light groups are also trembling at the moment.

Zhang Xiaoyu didn't hesitate, time was pressing, and he didn't know if this method was useful, at the moment, you had so much to do, and directly devoured all the remaining light clusters.

Rumble.

As soon as the Burning Sky Flame devoured the other light clusters, it exploded directly in Zhang Xiaoyu's meridians.

Zhang Xiaoyu's face was overjoyed.

And it worked.

The efficiency of the Burning Sky Flame is also fast, almost in a short instant, all these energies are refined and purified.

Moreover, Zhang Xiaoyu unexpectedly found that after being purified by the Burning Sky Flame, these energies did not lose much, but all of them became the Yuan Force of the fire attribute.

This discovery can be described as surprising and delightful.

"Assimilation? Or did the Burning Flame become conscious of its own?"

Zhang Xiaoyu thought of these things in his heart, and he didn't care.

Whatever the outcome, as long as it's good for you, that's a good thing.

At this moment, Zhang Xiaoyu did not take back the Burning Sky Flame, as for the energy that had been refined before, it was still wrapped in the Burning Sky Flame at this moment.

"If I refine this energy with the Burning Sky Flame, what will be the result?"

A possibility suddenly came to mind in his heart, Zhang Xiaoyu was not verbose, and soon began to run the Vajra Technique to refine this part of the energy.

After Yuan Li became a fire attribute, whether it could be used to refine it, Zhang Xiaoyu didn't know.

However, since this flame is his own, even if the refining is not successful, it will not be a big problem.

As for the quenching decision, Zhang Xiaoyu did not exchange it.

He had experimented before, the Vajra Technique, which can not only temper bones, but also flesh and blood, meridians.

"If I cultivate this technique to the fullest, will I finally practice the legendary Vajra Immortal Divine Skill?"

Zhang Xiaoyu thought about it a little wickedly, and soon stopped thinking about it.

King Kong is not bad, and it is not a big deal.

With the operation of the King Kong Jue, an unexpected scene that made Zhang Xiaoyu happen again.

I don't know if it's because of the change in the attributes of Yuan Li, this time of refining, Zhang Xiaoyu found that the speed was actually much faster, almost more than ten times that of before.

This discovery made Zhang Xiaoyu stunned for a moment, and then, his face was overjoyed.

He wanted to ask the cook if there were any good cultivation methods to speed up his cultivation, but then he seemed to have forgotten.

Chatting with the cook, chatting and chatting crookedly.

Now this new discovery makes Zhang Xiaoyu seem to have discovered the door to a new world.

However, in addition to being happy, Zhang Xiaoyu also began to wonder.

Is this because of the purification of the flame, or is it because the flame burns, which accelerates the absorption of the elemental force?

Zhang Xiaoyu didn't know this.

Of course, at this time, he won't think much about it.

I want to refine these demon yuan powers.

Five demon cores, providing a lot of demon yuan power.

Soon, these demon yuan powers were refined, and Zhang Xiaoyu glanced at the system data.

The calories are about the same as I thought, and a heart core provides about 10,000 looks.

And his own six organs have also completed the third tempering.

On the side of the system data, except for the obvious change in calories, the other data has not changed at all.

Zhang Xiaoyu was a little confused.

In the past, if you cultivate by yourself, even if you refine it once, the strength, qi and blood, and speed in the system data will change.

Even if the magnitude of the change is small, at least there will be a change.

But now motionless, Zhang Xiaoyu seriously doubted whether the system had crashed.

Neither should it.

If it freezes, the calories don't change, which means that there is no problem with the system itself.

"Could it be that it only refines the six intestines, and the system does not display data?"

Zhang Xiaoyu thought of this possibility, and soon, he didn't think about it anymore.

Now that I have a way to accelerate my cultivation, I naturally don't have to care about this, as long as I finish refining all my internal organs, I will naturally know.

The time, in Zhang Xiaoyu's cultivation, unknowingly arrived in July.

Early July.

Zhang Xiaoyu, who had been cultivating, opened his eyes.

After consuming all the heart cores and calories, the six internal organs were finally refined.

Standing up and moving his muscles and bones, Zhang Xiaoyu was thinking about his future cultivation, but his complexion changed suddenly.

At this moment, in his induction, the Heaven and Earth Yuan Force of the entire Wuda was surging wildly, and the concentration was increasing very quickly.

"What's going on?"

Opening the door, Zhang Xiaoyu subconsciously glanced at the sky, and the whole person was stunned.

At this moment, in the sky of Wuda, a huge black whirlpool seemed to be hanging overhead, slowly rotating.