Echizen Kazuya ended the meeting after arranging the preparation for the army, and the participating shinobi went to prepare for each other with solemn expressions, and now it is imperative to send troops to the troops of Iwa Shinobi Village to invade the country of wind.

After leaving a shadow clone in the Hokage's office to deal with all kinds of things, Echizen Kazuya used the Flying Thunder God technique to go to a secret base located on a desert island, where there were more than two dozen shadow clones practicing their own training.

Each shadow clone had different attribute chakras condensed in their hands, flashing with brilliant light of different colors, and when Echizen Kazuya came, they only glanced at it and continued to immerse themselves in the cultivation.

The reason why so many shadow clones can be used is the credit of the little fox with the four tails lying on Echizen Kazuya's shoulders at this time, most of the chakras on their bodies are yin and yang attribute chakras from the nine tails, and the remaining small part is all the chakras belonging to Echizen Kazuya himself, mainly so that the clones can comprehend various attributes, but it is enough for the clones to use one or two A-level ninjutsu.

It took more than three months to cleanse all the scattered and crazy wills belonging to the Nine-Tails in the Pseudo-Nine-Tails Chakra, and the plan to completely encroach on the Pseudo-Nine-Tails Chakra was a huge gain for Echizen Kazuya.

The four-tailed fox that is lying quietly and peacefully on Echizen Kazuya's shoulder now is the pseudo-nine-tailed on the original empty body, but now the will on the four-tailed fox is completely Echizen Kazuya's will, and controlling the little fox is as simple as controlling hands and feet.

In the process of constantly replacing the nine-tailed demon fox with his own will, Echizen Kazuya discovered that the chakra attribute of the nine-tails was the yin and yang attribute of the five common chakra attributes.

The well-informed Echizen Kazuya certainly knows what the yin and yang attributes are, and his own chakra has no attribute because of the attribute panel, which can be used to use attribute ninjutsu such as water, fire, wind, thunder and earth, and can also be used to use the secret technique of yang escape such as doubling technique.

In addition to the ninjutsu that cannot be used to release the five attributes of water, fire, wind, thunder and earth, almost all other ninjutsu can be released with the nine-tailed chakra, including the shadow clone technique, the multiplication technique, and the instantaneous technique.

There was no problem with the Yin and Yang attribute chakra used to release the Spiral Pill and Space Ninjutsu, so almost immediately, Echizen Kazuya was liberated from the dilemma of lack of chakra, and after accumulating a lot, he could finally give full play to his ability.

Echizen Kazuya's shadow clone technique has already reached a very advanced realm, and he can independently distribute the chakra in the shadow clone, but the original amount of chakra is small, and the duration of the shadow clone is not long no matter how it is assigned, and now as soon as the amount of chakra is liberated, Echizen Kazuya naturally began to use the cheating artifact of the shadow clone technique to speed up his practice.

The mental impact of the huge information when retrieving the shadow clone had little impact on Echizen Kazuya, and that impact could be easily withstood with the strength of his mental power.

Although the perception effect of the shadow clone is definitely not as good as the ontology's own cultivation, even if there are only a few layers of effect, under the accumulation of quantity, it can increase Echizen Kazuya's cultivation progress by several times, which shows that the comprehension speed of his later attributes must far exceed that of before.

In the process of mastering the Nine-Tails Chakra, Echizen Kazuya discovered that the Nine-Tails Chakra did not come out of thin air, it also followed the law of conservation of energy.

The Nine-Tails have been passively absorbing and transforming the natural energy everywhere around them to restore their own consumption, which I am afraid even the Nine-Tails and other tailed beasts themselves do not know, because they cannot feel the existence of natural energy, but simply know that their chakra will recover quickly after consumption.

After making this discovery, Echizen Kazuya tried to use the active substances in his body to gather more natural energy around the Nine-Tails for it to absorb.

The results are gratifying, the amount of chakra of the Nine-Tails under the control of Echizen Kazuya is actually growing under the supply of a large amount of natural energy, but the efficiency of the Nine-Tails to passively absorb natural energy is limited, and the growth speed is also limited, but even if there is a limit, Echizen Kazuya is already very satisfied, maybe one day he will be able to cultivate another Nine-Tails.

The shadow clones created through the Nine-Tails Chakra have the same characteristics as the Nine-Tails, and they can also passively absorb natural energy to increase their maintenance time, which greatly improves the usefulness of the shadow clones.

Moreover, Echizen Kazuya also quickly thought of a way to put active substances in the shadow clone body to gather natural energy and speed up the recovery speed of the shadow clone's chakra, so that his shadow clone could be maintained almost forever.

What Echizen and Kazuku didn't know was that the ability of the nine-tailed beasts to absorb and use natural energy was passed on to the Ten Tails, and the fundamental reason why the Divine Tree of the Ten Tails was planted in the Hokage World was to allow it to plunder the natural energy in the Hokage World to thrive and contribute to the cultivation of offspring for the Otsuki clan in the high time and space.

The nine-tailed beasts are split from the ten tails, and naturally have the ability to absorb and use natural energy, and the natural energy level of the Hokage world is very high, and the energy contained in it is also extremely huge, which is also the reason why the power of the immortal arts that add natural energy far exceeds that of ordinary ninjutsu.

For a huge tailed beast, even if it is just to absorb a little natural energy around them, the energy contained in it is already very considerable, which is also the reason why the tailed beast is inexhaustible for chakra, but their ability is still not worth mentioning compared to the ten tails.

The Ten Tails can actively absorb natural energy to grow and condense into reality, which is completely a predatory development of the Hokage world, if it is given more time to grow, the Hokage world will definitely become a dead place due to the depletion of natural energy, and it is through this characteristic of the sacred tree that the Otsuki clan has completed the colonization of the lower world.

Echizen Kazuya only has a little guess about the existence of higher time and space now, but he has already paid attention to some people of the Otsuki clan that he had heard of in his previous life, as well as the mysterious existences such as evil gods and demon gods that he came into contact with in this life, and because of those mysterious existences, he did not dare to slack off in his own cultivation.

Because there are a large number of nine-tailed yin and yang attribute chakra, Echizen Kazuya began to pay more attention to the ninjutsu that belongs to the yin and yang escape, and at the same time, through the ready-made yin and yang attribute chakra in the nine tails, he began to perceive the changes in the yin and yang attributes, and the doubling technique and the already powerful illusion of the Autumn Dao family, and the secret technique of the Yamanaka family in Echizen Kazuya's heart has improved again, because when using these, it is completely possible to consume the chakra belonging to the nine tails, and there is almost no need to worry about the lack of chakra.

Echizen Kazuya also lifted the shadow clones in his cultivation one by one, digested and absorbed the perception and harvested them, and then separated them again, until he summoned all the clones again, he took the little fox on his shoulder back into his body, and returned to the Hokage's office using the Flying Thunder God Technique.

With the assistance of a large number of shadow clones to assist in the cultivation, the improvement speed of Echizen Kazuya's various perceptions has been significantly accelerated, and it was originally expected to take two months to reach 100% of the wind attribute comprehension, Echizen Kazuya is now fully confident that it can be completed within one month, and as for the water escape perception, it is also very likely to be achieved within two months.