The mutated pure yang spiritual power that Zhu Lingwu had cultivated, and the transparent cold flame released according to the technique of the Xuan Nether Ghost Fire, was put on the body of a fierce tiger for experiments.

As a result, Zhu Lingwu was very satisfied, Zhu Lingwu found that although the power of this transparent cold flame released was different from that of the Xuanying Ghost Fire, it did not burn immediately at the sight of blood, but it also had a similar effect, and this effect was more hidden.

Under the observation of Zhu Lingwu's soul thoughts, the transparent cold flames released by Zhu Lingwu reached the tiger's side, and under the drive of Zhu Lingwu's thoughts, they infiltrated into the tiger's body.

After it touched the blood of the tiger, it did not burn immediately, and at first Zhu Lingwu was very disappointed, thinking that he had failed.

But soon Zhu Lingwu made a new discovery, and the transparent cold flame released by himself entered the blood of the tiger, and seemed to be absorbing the vitality contained in the tiger's blood shadow little by little, and with the absorption of the vitality, it became more and more unstable, and finally it also burned.

From this point of view, the transparent cold flame released by Zhu Lingwu seemed to have a similar effect to the Xuan Nether Flame, and the effect was more secretive, it seemed to have a slow penetration effect.

Initially, it does not burn immediately, so that it will not be detected in the first place, but this cold flame can flow in the blood for a period of time, and it seems that a certain amount of accumulation is required before it burns in the body.

Moreover, the areas of the body that it had previously flowed through would leave a little cold flame, and in the flow during this time, the cold flame had already spread to many areas of the body, and may even have flowed into the heart.

So when it erupts, it erupts at the same time in many places in the body, and some of them are still in the organs, and they can't be driven away at all, and the tiger doing the experiment is half of the body burning at the same time.

About half a pillar of incense, this tiger, which was more than two meters long, had been burned into a white bone.

According to the effect of the original Xuanming Flame, the creatures who were burned to death by the Xuanming Flame, the skeleton will also become the special magic weapon material of the Xuanming Sect under the special refining of the Xuanming Flame, according to the refining technique of the Xuanying Sect, this kind of white bone can be used to make many things.

And now, the white bones of this fierce tiger, under the calcination after the outbreak of Zhu Lingwu's transparent cold flame, actually had a similar mutation, and this effect was similar to the effect of the Xuan Nether Flame.

It's just that I don't know yet, can this kind of transparent cold flame enter the body of a qi refiner and hide it for a while without knowing it, and then suddenly attack?

It's a pity that Zhu Lingwu can't find anyone to be shiyan for the time being, and no one dares to give him experiments, the deep house is in the family's ancestral land Wubao, he can't find a clansman to try it.

If that person couldn't stop the internal combustion of this transparent cold flame and burned him directly, how could Zhu Lingwu pay for his life, and Zhu Lingwu couldn't explain how he learned this spell.

But Zhu Lingwu saw that the transparent cold flame he released had an effect, so he had already made a decision, and he should take this transparent cold flame, perhaps it should be called the Shadowless Yin Fire now, as a spell that he concentrated on cultivating when he was practicing the fourth layer of qi.

And this kind of shadowless yin fire belongs to a kind of fire spiritual power anyway, and the heart of the human body belongs to fire, so Zhu Lingwu decided that the place where the fourth layer of qi refining took the lead in condensing innate spiritual power was his own heart.

In fact, it is not completely accurate for Zhu Lingwu to say that this kind of realm setting of the fourth layer of qi cultivation cannot be said to be completely accurate, because Zhu Lingwu's cultivation of the Five Qi Returning Essence Secret has actually condensed an innate fire spiritual power point in Zhu Lingwu's heart that is used to absorb and transform the aura of heaven and earth.

It's just that this innate fire spiritual power point is still relatively weak, and its role is relatively simple, and it is still different from the process of spiritual transformation of the heart in the four-layer realm of Qi training.

But with this foundation, it can help Zhu Lingwu reduce a lot of trouble, which is equivalent to saying that Zhu Lingwu now has the foundation of the fourth layer of qi training.

This is also the significance of the high-level Qi refining heart method of the Five Qi Returning to the Yuan Heart Technique, in fact, now Zhu Lingwu not only has the foundation of the fourth layer of Qi refining, but has actually even refined the fifth layer of Qi, and even the later Qi Refining Realm has also had a cultivation foundation.

It is equivalent to saying that the high-level Qi Refining Heart Method has been preparing for the late stage of Qi refining since the beginning of cultivation, such as the body rhyme aura realm of the fourth layer of Qi refining.

There is also the initial realm of the five-layer spirit array of qi refining in the back, which is actually to condense and transform the five internal organs in the body into spiritual organs with spiritual power, and then use this to transform the five internal organs of the human body into spiritual organs to form a natural spiritual array of the human body.

The five organs of the human body are originally the necessary organs needed for human survival, and they are the source of life energy, and after transforming them, it is naturally of great significance for the qi refiner to transform the body from a mortal womb to an acquired spirit body.

But for Zhu Lingwu, since he cultivated the Five Qi Returning Yuan Mind Formula, he had been doing such a thing, and he was doing more and better, because the Five Qi Returning Yuan Heart Recipe was not just a condensation of spiritual power points according to the five elements of the human body's five internal organs, it would condense spiritual power points all over the body.

And then speed up the process of building a foundation into an acquired spirit body, which can also greatly increase the probability of a Qi Refiner building a foundation, after all, different Qi refining realms seem to be very simple to cultivate, but it is not so easy to actually operate.

Therefore, now Zhu Lingwu has determined that his cultivation goal of the fourth layer of Qi cultivation is to use spiritual power to re-condense his heart, but it is not easy to achieve this goal.

It has been more than half a year since Zhu Lingwu broke through the third-layer realm of qi refining, but Zhu Lingwu felt that the condensation of his heart had not even achieved one-tenth of it.

In order to condense the heart into an acquired spiritual object, it must be refined again and again with innate spiritual power, so that the turbidity in the heart can be eliminated and the biological fluid in the heart can be replaced with spiritual power.

Moreover, human organs such as the heart, but living creatures, naturally cannot be forcibly refined by means of refining weapons, so this transformation process needs to be even more careful.

Fortunately, condensing the five internal organs in the body, it is not necessary to separate the special innate five elements spiritual power, only the mutated pure yang spiritual power in Zhu Lingwu's body is required, otherwise I am afraid that this process will be more troublesome.

But Zhu Lingwu still needs to make up his mind to solve one thing, that is, Zhu Lingwu cultivates the Nine Turns Thunder Tyrant Body Technique, and the essence and blood condensed and contains the spiritual power of the acquired electricity are also hidden in the heart.

Now that Zhu Lingwu is going to do something to his heart, how to deal with this essence and blood that contains rich acquired power?

Now Zhu Lingwu has felt a little trouble, some of the innate spiritual power he drove into the heart was actually absorbed by the acquired electricity in the heart chambers, which inevitably increased the difficulty of Zhu Lingwu's heart purification.

This acquired spiritual power conceived in the essence blood was originally used to cultivate the Nine Turns Imperial Thunder Tyrant Body Technique to impact the innate realm, but now that Zhu Lingwu can refine qi, then does this acquired spiritual power still need to stay?

Anyway, Zhu Lingwu could already introduce the aura of heaven and earth into his body......