Zhu Jiu suppressed the small doubts in his heart, and did not immediately sacrifice the remaining two souls.

Instead, he sat cross-legged with his eyes closed, thought quietly, summed up the reasons for his failure, and thought through each step of the sacrifice in detail.

After repeating the simulation and rehearsal in his brain many times, he got up again and began to try to refine the next soul.

This time it was the female disciple of the Cold Moon Palace who tried it, and this woman's soul had been full of resentment towards Zhu Jiu before entering the furnace, and her eyes were resentful.

At this time, he was detained in the furnace, especially after seeing the soul of the Night Earth Clan being smelted and disintegrated, the resentment and resentment on his face had disappeared, and he turned to a slightly frightened look, obviously unwilling to be thrown into the green fire that burned again.

But her slight struggle was to no avail, and she was forcibly dragged into the green fire by the power of the stove.

As soon as the woman's soul came into contact with the green fire, she immediately let out a miserable howl that belonged to the yin spirit, and she rolled and struggled in the flames.

Zhu Jiu was far more cautious this time than last time, steadily regulating the heat, and constantly adding various rare ghost path materials to the furnace according to the strength of the heat.

These materials were melted by the green flame one after another, adding to the power of the green flame, and gradually adding a thick black fog to the fireworks.

The black mist is formed by the incineration of many precious materials by the green flame, which rises and falls in the flames, and always condenses.

At this time, Zhu Jiu's control technique changed, and in an instant, the fireworks in the furnace rose sharply, and the woman's soul in the green flame and the black fog began to gradually converge and merge, and the woman's soul was gradually dyed with a layer of black, covering up the original appearance of the soul.

Zhu Jiu's eyes lit up, his expression seemed extremely focused, and he mobilized the power of the sea knowledge talisman, using his fingertips as a pen, and quickly carved it in the void.

Dao rune normals appeared on Zhu Jiu's fingertips, and slowly, a magical rune composed of thousands of normal lines appeared in the void.

This rune with the void as the carrier was infused with mana by Zhu Jiu, almost every stroke was very particular, the rune changed several times after it was formed, and then quickly shrunk into a palm-sized ball of light, on which the light flickered, beautiful as an extraordinary artifact.

This ball of rune light condensed by mana was then thrown into the furnace by Zhu Jiu, and in a flash it merged into the position of the woman's soul's head.

At this time, whether it was the black mist formed by various precious materials, or the mana runes knotted by Zhu Jiu, they were all in harmony with the woman's soul, which was the most important stage in the entire sacrificial process.

As time passed, the black qi that permeated the entire soul became thicker and thicker, and gradually had the tendency to cover people's eyes, and from the appearance, this woman's soul had turned into a humanoid imp with a black mist churning.

When I was refining the soul of the Night Earth Clan just now, it was this step that went wrong, but this time there was no accident until the black mist was completely absorbed.

Zhu Jiu suppressed the joy in his heart, and found that there was a wonderful connection between the woman's soul at this time and his own sea knowledge talisman, and then tried to control her, this soul became as unsatisfactory as his own demon corpse, and he no longer hated and resisted.

Zhu Jiu exhaled softly, feeling a little satisfied in his heart, the next steps should not be neglected, and he began to manipulate this humanoid soul with strong black qi to suck the green flame in the furnace in turn.

The soul received Zhu Jiu's order, and immediately opened his mouth to suck, and the green flame in the furnace began to be devoured by it.

The reason why a cultivator's humanoid soul is more valuable than an ordinary low-level Yin Spirit is that its bearing capacity is far from being comparable to that of a low-level ghost, and it has the potential to evolve.

This last step is to manipulate the soul imp to absorb the green flame, in order to increase its ferocity and further temper the ability of the ghost to withstand it, so that the soul imp is no longer afraid of certain substances containing fire or yang breath.

After this step, the little ghost can be regarded as truly formed, with the ability to travel during the day, and has preliminary magical powers.

In the process of devouring the Green Flame, if ordinary ghosts can't resist the special power contained in the Green Flame, they will be incinerated and exploded, turning into nothingness.

And the preciousness of the fourth-order cultivator's soul is here, because they have cultivated mana before their death, so whether it is their body or soul, they are extremely strong, so it is possible to survive the last step and grow into a soul and ghost cultivator who can practice advanced.

This kind of ghost path technique of cultivating cultivators' souls is also called ghost cultivating demon corpses, which means that the souls of cultivators who have undergone sacrifice can grow, which is almost comparable to the evolution of demon corpses.

Of course, this kind of ghost cultivation that has been cultivated is actually different from the real demon corpse, first of all, the cultivated soul of the cultivator has many defects in growth, and it needs to be constantly re-cultivated in order to assist it in always maintaining the ability to evolve and break the rank.

Moreover, its growth limit is also subject to many restrictions, far inferior to the genus of demon corpses, which can accompany cultivators to advance all the time, and there is almost no limit.

But the ghost cultivators who come out of this kind of sacrifice also have benefits that the demon corpses can't reach, the first advantage is that these ghost cultivators will retain most of their memories during their lifetimes, have spiritual intelligence, and can communicate.

The second is that the ghost cultivation that comes out of the sacrifice does not charge only one per level of the demon corpse, and there is no limit to the number of ghost cultivation that comes out of the sacrifice, as long as the conditions and materials allow, it can theoretically be continuously sacrificed, and once the ghost cultivation of the sacrifice dies, it will not form any burden on the controller itself, unlike the death of the demon corpse, which will cause great damage to the master's soul.

And then there is the fact that if the ghost cultivator can always maintain his growth, when the stage gradually improves, there will be a great wonder that will be revealed.

Zhu Jiu is currently cultivating the soul of such a cultivator, but he has not thought about things that have been too long, mainly out of the consideration of training his own cultivation techniques and increasing his combat effectiveness.

This was a disciple of the Cold Moon Palace before his death, and his soul tolerance ability was very good, and he continued to absorb the green flame but there was no accident, until the green flame was sucked out after the last day, and the soul of this ghost cultivator was fully refined, and the body of the black mist began to be filled with a faint power of yin and cold, and it seemed that this sacrifice was very successful.

At this point, Zhu Jiu can be regarded as the first subordinate ghost with spiritual wisdom who has successfully refined.

From then on, this little ghost can start to accumulate yin power or devour other yin spirit ghosts to grow, and gradually grow and advance, which is an alternative form of cultivation, and many wonderful things will gradually manifest with the growth of the little ghost.

After that, Zhu Jiu manipulated this formed imp to retreat to the side of the furnace and stand, and began to refine the soul of another man in the Great Sun Heavenly City according to the law, originally thinking that with the previous two experiences, this time it should be successful.

Unexpectedly, with a slight mistake in the process of operation, this soul that Zhu Jiu had high hopes for also exploded like the previous Night Earth Clan's soul, and soul fragments scattered in the furnace.

Zhu Jiu was greatly disappointed in his heart, this kind of sacrificial cultivation method that transforms the soul into a ghost cultivation is really difficult, and the slightest negligence will be wasted.

In the next moment, Zhu Jiu was attracted by the magical changes of the Ghost Eater Furnace again, and the Ghost Furnace actually absorbed the fragments of the soul that had been scattered again.

After absorbing the shattered soul fragments, the entire furnace began to glow with a misty glow, as if some kind of mysterious change was taking place.

Zhu Jiu's spirit was shocked, and he paid attention without blinking.