Chapter 120: Soul Refining Method and Hunyuan Treasure Box

After dealing with the prisoners in Gui Lantern City, Uchiha Feiyu had hundreds of black energy for sacrifice in his hands, all of which were of very high quality.

The Grass Ninjas were also very happy, especially the lord of the Ghost Lantern City, Wuwei, because more than half of the Origin Pills refined by Uchiha Feiyu were given to the lord who surrendered to the city.

Unfortunately, he was happy too early. Uchiha Feiyu used a divine technique to directly control the lord of Gui Lantern City and did not give him any chance at all.

In fact, Wuwei's strength was almost the strongest among the original Grass Ninjas in the village. After eating a large amount of high-quality origin pills, he progressed faster than the three high-level Grass Ninjas and possessed a strength comparable to the Third Hokage.

The current Third Hokage is almost 50 years old. His strength is not invincible, but he is much stronger than the later ones. Among the Hokage, he can be considered a strong one.

With the addition of Wuwei, the Kusanagi already had a top-level Kage-level warrior, three Kage-level warriors who were also strong, more than a hundred jonin, nearly a thousand chuunin, and more than 2000 ordinary genin.

Except for the Genin stage, where there is still a gap compared to the Great Ninja Village, the strength of the Kusagakure Village in other stages is not inferior to the Five Great Ninja Villages, and is even much stronger than most of the Ninja Villages.

In addition, the major ninja villages today have either just fought a great battle and suffered heavy losses, or are still in the midst of a melee. It can be said that in the entire ninja world, the Kusanagi have become a force of vital importance.

At least... this force is enough to capture other ninjas.

Even the five major ninja villages would be cautious when faced with such a powerful force, and they would not take action against the Kusanagi until the war was over.

As for whether there will be a situation in which several ninja villages will attack the Grass Ninja at the same time in the future, that is none of Uchiha Feiyu’s business.

In the final analysis, this group of Grass Ninjas were just tools used by Uchiha Feiyu to harvest sacrifices and artificially cultivated medicines. It didn't matter if they all died.

Then, Uchiha Feiyu turned his gaze to the so-called Box of Bliss and raised his eyebrows slightly.

"This box... is quite interesting!"

The Box of Elysium is said to be a treasure created by the Six Paths Sage. There are also outrageous rumors that whoever opens the Box of Elysium can have a wish come true, but Uchiha Feiyu can see at a glance that this box has little to do with chakra.

Although there was a large amount of energy wrapped around the box, that energy was filled with a dark and bloody aura. According to the magic skills he had practiced, the energy wrapped around the box was not so much dark chakra as pure resentment.

"It feels like a good material for making magic weapons. Come to think of it, I don't seem to have any good magic weapons right now."

The Kusanagi sword is quite powerful, but in the final analysis, apart from a sense of breaking evil, it is just a sharp and sturdy weapon, which is far inferior to those magical treasures and artifacts.

There is some knowledge about refining equipment in the secret art of Devouring the Heavens inherited from the Zhatian Fa. However, the refining equipment of the Zhatian Fa is only for fun. Except for the innate magic treasure refined by itself, it is completely incomparable with the refining equipment in other immortal cultivation worlds, not to mention that the knowledge obtained by Uchiha Feiyu is still very incomplete.

Moreover, Uchiha Feiyu had no way to practice the secret realm method, and could not forge his own magic weapon at all. Moreover, the best material for the secret weapon refining technique in the Devouring Heaven Demon Art was actually the flesh body with various special physiques. On the contrary, the means of refining various natural treasures were very common.

Not to mention that there are no rare treasures in the ninja world. The Box of Paradise is completely different from the authentic rare treasures. God knows what can be refined using the Demon-Swallowing function?
Thinking of this, Uchiha Feiyu made up his mind to take out some knowledge about refining from the book of magic inheritance and put the entire Paradise Box to his own use.

It just so happened that he had also killed several thousand ninjas in the Kusagakure Village, so he had enough black energy sacrifices.

As the black gas on the altar slowly disappeared, the book of magic inheritance vibrated twice again, conveying two pieces of information to Uchiha Feiyu.

This time, Uchiha Feiyu's request was to find a way to maximize the application of the Box of Bliss, but the Book of Demonic Inheritance gave him two inheritances.

One is a method of forging a magical weapon called the Hunyuan Treasure Box, and the other is a method of refining the soul.

The name of the Hunyuan Treasure Box sounds good, and it is actually an authentic magical weapon. As for its effect, it can be regarded as an enhanced version of the Blood Pool.

The blood pool can refine the bones and blood of others to improve the bloodline, while the Hunyuan Treasure Box can refine both bones, blood and soul completely. The effect is not just to improve the bloodline, but to comprehensively strengthen the chakra, physical talent and soul strength.

To put it simply, it is a fully automatic alchemy furnace, but the materials needed for this alchemy furnace are all flesh and blood, and it is best if they are alive.

The elixirs produced are much stronger than those in the blood pool. If an ordinary ninja is thrown into it, he can develop three items: the essence of the soul, the qi and blood of the body, and his own chakra.

"This is indeed a book of the inheritance of the magic way. Among the ten inheritances, eight teach you how to eat people! But what I want is a magic weapon that increases my combat power. Why did you give me this thing?"

That's right. Uchiha Feiyu has now discovered that his way of eating people has become more and more sophisticated, from the Soul Binding and Sentenced Generals to the Soul Devouring and Blood Refining Secret Technique, to the Sky Devouring Magic Art, and finally to the current Hunyuan Treasure Box and Soul Refining Secret Technique, all of them are unique ways of eating people.

The soul refining secret technique is quite similar to the soul-eating technique of the Soul Binding and Condemning Generals. It is a secret technique from the Soul Clan in Fights Break Sphere, the same secret technique used by the group of Soul Palaces that are laughing so loudly.

The reason why such a secret soul refining technique came into being is because a huge amount of souls are stored in the Box of Bliss.

Now Uchiha Feiyu is more and more convinced that the Box of Paradise has nothing to do with the Six Paths Sage, because according to the perception he got from the soul refining secret technique, this big box in front of him stores at least millions of souls!

Moreover, these souls are not the souls of ordinary people. They have to be at least ninja level to be included in the box in front of them.

It should be noted that in the Fourth Ninja World War, the five major ninja villages plus the smaller ninja villages combined only formed an army of 80,000 ninjas, and that was after more than ten years of peace.

No matter how high the upper limit is, the number of ninjas existing at the same time in one era cannot exceed 20. In theory, the Paradise Box must have buried five generations of ninjas to collect so many souls. In reality, it is definitely more than that. You have to know that the number of ninjas has greatly expanded since the establishment of the five major ninja villages. Before that, all ninjas existed in the form of families. If you search the entire ninja world, there are only tens of thousands of ninjas at most.

It has only been a thousand years since the Six Paths Sage founded the Ninja Sect and passed on chakra to the world. No matter how you calculate it, it is impossible for the Box of Paradise to collect the souls of nearly a million ninjas in a thousand years.

"Perhaps this thing appeared many years before Kaguya, otherwise it would not have devoured so many souls. And it looks like this thing has the style of Onmyoji and other systems."

Things like devouring souls, absorbing resentment, and creating a being that can sense hostility, these practices are very rare in the chakra system, but they are basic operations in Yin-Yang magic.

But soon, Uchiha Feiyu no longer thought about which god created the Box of Bliss, but sat cross-legged on top of the box and began to refine the Box of Bliss.

Although there is no systematic practice, the chakra in Uchiha Feiyu's body has undergone great changes in nature after being forged by many secret techniques. It is somewhat close to the legendary magic power. At least it can be used to refine and forge the Box of Bliss.

While his chakra slowly permeated the large box under his feet, Uchiha Feiyu also began to practice the soul refining method. The millions of souls stored in the Box of Bliss also began to be gradually refined into soul energy.

Millions of souls are a lot in number, but in fact their quality is not high. The most important thing is that because too much time has passed, the energy inside the souls has been severely lost.

Moreover, the Box of Bliss is filled with evil spirits, and the souls stored inside are also severely contaminated. There are many impurities, almost ninety-nine percent of which are resentment, leaving only a little bit of pure soul energy.

Uchiha Feiyu's soul refining method comes from the soul clan in the Doupo world. It can completely eliminate the resentment through repeated refining, but while completely eliminating the resentment, waste is naturally inevitable.

Especially those souls locked in the Box of Bliss, which were filled with great resentment. Although their number was terrifyingly large, after they were completely refined, not even one thousandth of the pure soul energy was left.

The soul energy of about several hundred people cannot be considered weak. At least Uchiha Feiyu's soul energy is at most not much different from the soul energy of these several hundred people.

Chakra is not even a complete cultivation system. It is more like a so-called supernatural power. It will only increase with the growth of the body and mind, and there is no specific method of cultivation.

Therefore, even the so-called Kage-level strongmen, their own soul energy is at most a dozen or dozens of times stronger than that of ordinary people under the nourishment of chakra.

Uchiha Feiyu could have such powerful soul energy with the help of a lot of magic skills, especially the Soul Binding and Condemning Generals who eat souls and the Heaven-Swallowing Magic Skill which devours the three elements of Essence, Energy and Spirit, which greatly increased Uchiha Feiyu's foundation.

But whether it is the Soul Binding and General Summoning Technique or the Sky Devouring Demon Technique, in fact, neither of them is a technique specifically designed to devour and increase the soul.

After the Soul-Binding General devours the soul, what increases is the innate Qi, not the soul energy, and the conversion is only one in a hundred.

As for the Heaven-Devouring Demonic Art, its greatest effect is to change the physique and fuse all parts of the body into chaos, and increasing soul energy is just a side effect.

It is precisely for this reason that although Uchiha Feiyu's soul energy is not weak, it is not that high either. Compared with ordinary Kage-level ninjas, it is a cliff-like improvement, but compared with his physical foundation, it is far worse.

However, this time there was a chance to make up for it. While Uchiha Feiyu was refining the Box of Bliss under his feet, he was also absorbing the soul energy in the box. He felt that his soul and body had fallen into some kind of wonderful state.

He didn't know how long it had been, but he felt as if he had become extremely light. With a light jump, he broke free from his restraints and floated in the air.

Looking down, Uchiha Feiyu suddenly saw his body sitting on the Box of Paradise. Only then did he realize that his soul had left his body.

Uchiha Feiyu had practiced the secret art of spiritualization before. Even though he was not interested in the art at that time, he was able to master it easily with his astonishing foundation.

However, this kind of ninjutsu did not have much effect on Uchiha Feiyu, and his body was in a state of powerlessness after being separated from his soul, so he had never used it.

"But... I am not in the state of spiritual transformation now... My body is still refining the box of bliss below!"

"What on earth is this? The legendary lawlessness and thoughtlessness?"

After performing the spirit transformation technique, the ninja's body lost all consciousness, almost like a vegetative person, but Uchiha Feiyu could clearly feel that his body was still refining the Box of Bliss below. Obviously, his current state was not in the spirit transformation technique.

Not to mention that Uchiha Feiyu could also feel that his soul did not have any chakra attached to it, which was completely different from the energy shell formed by chakra when he performed the spiritualization technique.

Although he didn't know what state he was in now, Uchiha Feiyu could feel that this didn't seem to be a bad thing.

After a moment, Uchiha Feiyu felt a suction force coming from the body below him, and in an instant, his soul returned to his body. At the same time, he could feel that his soul seemed to have become much more stable.

After absorbing a large amount of soul energy, although Uchiha Feiyu could feel that his perception, reaction, and chakra control abilities had improved by leaps and bounds, he also had a feeling of lightness and emptiness. After this change, he felt a sense of security in his heart.

After letting out a long breath, Uchiha Feiyu showed some joy. In fact, although Uchiha Feiyu's strength has been improving by leaps and bounds, there are also many hidden dangers.

After all, the so-called magic skills always have shortcomings such as being quick to achieve success, and the Uchiha bloodline and chakra system are not a force with a solid foundation. On the contrary, they can be said to be the magic among the magic ways. Naturally, Uchiha Feiyu's practice also feels a bit like walking on a tightrope.

Although his cultivation is improving rapidly now, his foundation is definitely not solid. It is just slightly stronger than the ninjas in this world. If he really reaches a certain level of strength, he might encounter a bottleneck that he can't overcome.

"This soul transformation has at least helped to solidify my foundation a little bit... But I can't care so much now. At least when I reach a bottleneck, my strength will definitely be much stronger than that of the Otsutsuki clan."

(End of this chapter)