Back at home, Hinata immediately closed the doors and windows, and then couldn't wait to spread out the secret scroll that recorded the 'Yin Seal' in his bedroom.

With just a cursory glance, he found traces of the Vortex Clan's sealing technique from the many sealing techniques of the 'Yin Seal'.

Obviously, the developer of this 'Yin Seal' should be from the Vortex clan, and he is also a Vortex clan with extremely high attainments in sealing skills and an extremely delicate mind, and it is likely to be a woman.

Then, while touching the arcane scroll with her hand, Hinata Mirror began to study it word by word.

In the process, he sometimes frowned, fell into deep thought, sometimes raised the corners of his mouth, and smiled smugly, and before he knew it, two or three hours had passed.

"Whew..."

After exhaling lightly, Hinata retracted her gaze.

This 'Yin Seal' was the same as he had expected before, it was indeed a very high-end, very subtle secret technique.

With the Hyuga Mirror's sealing skills, he could easily see that this 'Yin Seal' must have undergone several generations of perfection, and all aspects have been taken into account by successive generations of developers, and it is a very mature secret technique, with almost no hidden dangers and defects.

But it is precisely because the 'Yin Seal' has been perfected and there are almost no hidden dangers and defects, so its cultivation difficulty has also increased exponentially, and it has almost strict requirements for the cultivation of the cultivator's sealing technique and the ability to control the chakra.

In Hinata's impression, there are only three people he knows who have successfully mastered the 'Yin Seal', namely the original Nine-Tails Pillar Force Vortex Mito, Tsunade Hime, and the disciple of Tsunade Sakura in the original time and space.

Among these three people, one of the first two is a strong man of the Uzumaki clan, and the other is a strong man of the Thousand Hands clan, whether it is bloodline or ninja qualifications, they all belong to the top group in the ninja world. As for the third Haruno Sakura, although she doesn't have any strong bloodline, her talent for controlling chakra is also one of the best among the twelve small powerhouses of Konoha.

And as a disciple of Tsunade, he failed to master the 'Yin Seal' because of his own qualifications, which shows how harsh the 'Yin Seal' is for cultivators!

But these are not the most painful things for the Hyuga camera, what he really feels a headache is that the 'Yin Seal' is indeed a secret technique that can only be cultivated by women, as Tsunade said.

The original 'Yin Seal' may have been cultivated by both men and women, but because the developers who perfected the 'Yin Seal' in the past generations may have been women, the 'Yin Seal' has become more and more suitable for women's body structure, resulting in more obstacles for men to cultivate the 'Yin Seal', and the cultivation requirements of the 'Yin Seal' are extremely harsh, so it is almost impossible for men to successfully cultivate the 'Yin Seal' under normal circumstances.

Hyuga Mirror was still somewhat confident in his attainments in the sealing technique and his ability to manipulate Chakra, so he quickly put away his fear of difficulties and tried to cultivate the 'Yin Seal'.

Like all seals, the core of the 'Yin Seal' is also the sealing technique.

It's just that its sealing technique is not burned on the enemy, but on its own body, and it is burned on the most sensitive and vulnerable eyebrows in the human body.

This point is a great test of a cultivator's understanding of the structure of the human body.

Fortunately, Hyuga Mirror is a Hyuga family with white eyes, and he has received a rigorous education in this area since he was a child, plus he has studied human cloning all year round, and his understanding of human body structure is not to say that he is the first in the current ninja world, but at least he can squeeze into the top ten in the ninja world, so this aspect is difficult for him, he can try again and again, without worrying about accidentally hurting his brain tissue.

Mobilize the chakra...

Stamping...

Burning Seal...

The Hyuga Mirror follows the steps in the arcane scroll, and every link is done in one go, almost impeccable!

After successfully burning the sealing technique of the 'Yin Seal' to the center of his eyebrows, Hyuga Mirror slowly opened his eyes, observed himself in the mirror in front of him, and found that the iconic diamond-shaped pattern of the 'Yin Seal' appeared in the center of his eyebrows.

"Success?"

Hinata Mirror was suddenly overjoyed, but then frowned again.

Because he suddenly discovered that the sealing technique of the 'Yin Seal' engraved on the center of his eyebrows did not communicate with all the meridians of his body as recorded in the arcane scroll.

And if the sealing technique at the center of the eyebrows can't be connected with the meridians of the whole body, then naturally it won't be able to absorb and store chakra.

"How so? What went wrong? ”

Hinata Mirror pressed down his impatient emotions and began to calm down and check the process of casting just now, but after some investigation, he found that there was nothing wrong with his casting process, so he lifted the sealing technique he had just burned and tried again, but the result was still the same, no matter how he tried, the sealed technique after burning could not be connected with the various meridians of his body.

"Is it because of the difference in the body structure of men and women?"

In a trance, the Hyuga mirror made a judgment.

It was impossible for Tsunade to hand over a fake 'Yin Seal' secret scroll to Suzu, and there was nothing wrong with his casting process, so the only explanation was the difference in the body structure of men and women.

Perhaps with the same technique just now, women can succeed, but men can't.

"It must be caused by the subtle differences in the meridians of men and women!"

Hinata Mirror was a little annoyed, if it was really as he guessed, then it was not his problem, but the problem of the 'Yin Seal'.

But Tsunade only gave him seven days, and with such a little time, it was enough to cultivate the 'Yin Seal', but it would be far from enough to improve the 'Yin Seal' and make the 'Yin Seal' suitable for male cultivation.

"No wonder Tsunade didn't rush to get the secret scroll back, it seems that she is sure that I won't be able to learn the 'Yin Seal'."

Hinata Mirror figured it out, Tsunade was determined that he wouldn't learn the 'Yin Seal', so he traded with him with the Mystic Scroll, it seemed that this was a fair deal, but in fact he had to work hard for Tsunade in vain.

And Tsunade can not only uncover the matter of the Hyuga Mirror's theft of the secret technique smoothly, but also let the Hyuga Mirror help her suppress the Uchiha clan, after all, the current Hyuga Mirror is no longer a small role to be manipulated at will, even if Tsunade really wants to punish the Hyuga Mirror, she has to take into account the influence of all aspects, the violent resistance that the Hyuga Mirror may have, and the attitude of the Hyuga family.

"Cut, dare to underestimate me!"

Hinata Mirror took a sip, and immediately took out the storage scroll that sealed the fire escape clone from the ninja bag he carried...