Soon, Tsunade was in Chiba's base, reading the so-called core information of Chiba and Orochimaru.

The resurrection is difficult to say, but it is not as difficult as imagined.

In fact, Orochimaru's ability to be infinitely reborn in other people's bodies is already a kind of resurrection in disguise.

Although this resurrection has many drawbacks, considering its practicality, it can undoubtedly be regarded as the mystery of the mysteries.

Of course, ordinary people do not have Orochimaru's own rich knowledge reserves and various occult abilities, and it is difficult to copy Orochimaru's method, but similar methods are not impossible.

In a situation like Kai's body, which has long been damaged and cannot be used at all, it is naturally even more difficult, and it is not necessary to clone their bodies, but with the Mizumen and Yahiko in good condition, it is relatively easy.

To resurrect them, they only need to do three things.

The first thing, repair their body.

The second is to find their souls.

The third thing is to stuff the soul into it.

Among them, it can be done to recover the soul of the filthy soil and reincarnation, if you want to stuff the soul back, the secret method of rebirth of the Great Snake Pill can be used for reference, and the only difficult thing is probably to repair the body.

It's okay to say that Yahiko, who is only injured, is much more difficult to recover from the body like Mizumon, which has lost a lot of vitality due to secret arts, and Kushina, who has also lost a lot of vitality because of the loss of the tailed beast.

Of course, finding out the problem itself needs to be solved, and Chiba has reason to believe that Tsunade, a medical expert, can find a solution for him in this regard.

And for the difficult method of resurrecting the rope tree, Chiba also gave a theoretical basis for cloning, and Orochimaru himself was later a forbidden master who could clone characters at will, even if it wasn't a few decades later, within ten years, Orochimaru should have developed the technology to make replicas of body materials that have wooden escape cells and are like filthy earth spots.

The ninjutsu that Dou later used in the Great War were basically the essence of Orochimaru's research.

And right now, thanks to Chiba's guidance and the research and development that started in advance, Orochimaru's progress in this regard is naturally very fast.

In the face of such a feasible method given by Chiba, although Tsunade was reluctant to help Chiba anymore, he was still unconsciously attracted by Chiba's plans, and began to contribute from time to time.

On the one hand, he is indeed eager to resurrect his younger brother, and on the other hand, as a medical ninja, he is simply unable to resist the temptation of this medical mystery.

Of course, Chiba also pretended to turn a blind eye to Tsunade's secret information about this ninjutsu back to Konoha in the open.

If this ninjutsu is really successfully developed, their Konoha will undoubtedly benefit much more than Chiba and them, after all, they used to have too many strong people, which may be the real reason why Tsunade really stayed to help.

In Chiba's opinion, it doesn't matter if Tsunade passes it on to Konoha or not, when this ninjutsu is developed, maybe he has unified the ninja world, not to mention that even if those strong people in Konoha are resurrected, Chiba is estimated to be no longer in his eyes at that time, and the enemy he is staring at in his eyes is Kaguya, from the beginning, their pattern and vision are not on the same level.

Soon, with Tsunade's continuous help, Chiba's R&D progress increased dramatically.

And in the process of continuous research,Chiba also continued to pretend to be a medical officer.,Tempting and taking information about the Yin Seal.,Because of the ingenuity of Chiba's operation,Tsunade didn't suspect too much.,The knowledge and things obtained from Chiba.,In Tsunade's opinion, it's far more than his own two-handed skills.。

Finally, a few months later, Chiba combined his rich knowledge to roughly find the general principle and process of the Yin Seal.

Soon Chiba began to quietly grope for herself.

In fact, long before that, Chiba already had a certain understanding of this S-level forbidden technique.

The principle of this technique is not difficult to say, it is nothing more than purifying a large amount of chakra, sealing it in the Yin seal on the forehead, and then taking it out and using it in wartime.

However, although this technique sounds simple, it is surprisingly complex to actually operate, and it is also surprisingly difficult to learn.

Just saying that the degree of control that can be called a pervert can stump 99.99% of the people in the ninja world.

As for the rest, the rich knowledge of medical ninjutsu, the extreme understanding of body structure, and the ability to seal the art are quite good, as well as some other various small skills, which combine to make this technique one of the most difficult to learn even in S-level ninjutsu.

Of course, the amplification effect that this technique can bring after learning is also extremely amazing.

In Chiba's opinion, it is not an exaggeration to say that the ninjutsu of Yin Seal is one of the strongest ninjutsu in the Hokage world, because this can be regarded as a growable amplification ninjutsu.

Speaking of its utility, the function of storing chakra may be secondary, for Chiba, he is not short of chakra, the real strength of this ninjutsu is probably to be able to improve the quality and accuracy of his chakra in a short period of time.

If you want to say that you can do ninjutsu like Tsunade that can restore the body in an instant, if it is only on a small scale, it can probably be done by giving Chiba some time, he is completely able to condense a part of the high-precision chakra in a short time, and it is also feasible to repair the body on a small scale, which is also the basic skill of a medical powerhouse.

But in battle, it is not natural for Chiba to have that time to refine high-precision chakra, and even in peacetime, it is impossible to refine too many high-precision chakras.

This reflects the preciousness of the ninjutsu of the Yin Seal, which can temporarily make people have a powerful chakra accuracy that exceeds their current ability and level, that is to say, it can increase explosiveness, which is equivalent to a powerful buff, no matter how strong you are, you can temporarily increase your explosive power by a large margin.

Even if it is said that in the later stage, when the Yin and Yang Escape is developed to the limit, this technique can still bring a certain increase to the caster, and the effect is slightly weaker at most.

And the explosive power is heavy, it goes without saying.

Even if you have endless chakra, if the explosive power is not enough, it is useless at all, killing people usually only takes a moment to end, and the decisive victory is often in a short moment, even if you have endless chakra, it is useless if you can't burst out.

Therefore, Chiba said that this ninjutsu that can strengthen himself from the ninja's foundation chakra in a short period of time can be regarded as one of the strongest mysteries.

And the reason why the effect is so general in the hands of Tsunade... In Chiba's opinion, Tsunade is still too weak, if the first generation is allowed to use this technique, the power brought by such an increase is definitely far more amazing than Tsunade, which itself is a ninjutsu that is stronger in itself, the stronger the effect.

And right now, what Chiba wants to master is such a buff ninjutsu that is crucial to him.

And if you want to learn this ninjutsu, it's not as difficult as you imagined.

As far as Chiba is concerned, he does not lack the most important basic chakra control for learning this ninjutsu.

Seventy shadow clones, such as continuous cultivation of ninjutsu day after day, if you count it as one year to top others for seventy years, today's Chiba is equivalent to the progress of ordinary people in the development of ninjutsu for three or four hundred years, even if because the shadow clone is far less effective than the ontological cultivation, this value will be greatly discounted, and it is definitely an accumulation far beyond the limit of ordinary people.

And chakra control is just one of the incidental abilities brought about by such an amazing accumulation.

It didn't take much time, Chiba initially mastered the Yin Seal, although it may be weaker than Tsunade's genuine version because of the lack of information, but after all, he still succeeded in mastering this ninjutsu.

Today, Chiba has used the rich heritage brought by the cultivation of a large number of shadow clones, and finally began to gradually reveal his edge.