Retracting his gaze into the distance, Hinata opened his eyes and examined himself.

At this time, his chest seemed to be on fire, and his respiratory tract was damaged in many places, even if it was just ordinary breathing, it would hurt his heart and lungs, and this undoubtedly showed that his respiratory system, especially the heart and lungs, had reached its limit.

If you continue with it, you are likely to suffer cardiac arrest or lung necrosis.

In addition, his limbs were also sore and weak, and some muscle groups that were not very strong even showed obvious tears.

"Cut!"

Looking at the physical condition fed back from the white eye's field of vision, Hinata couldn't help but take another sip, and her face darkened.

As for the difficulty of cultivating the 'Thunder Dun Chakra Mode', he had expected it from the beginning, but he never expected it to be so difficult, and even he, a Thunder Dun clone who had mastered the 'Purple Lightning' and 'Lan Dun', couldn't bear it.

"It seems that it was too smooth to master 'Purple Electricity' and 'Lan Dun' before, which made me deviate from the strength of this Lei Dun clone to a certain extent!"

Soon, Hinata examined himself.

Because he has had many experiences in developing the 'Blood Inheritance Limit' and even the 'Blood Inheritance Elimination', he is a real master in terms of the nature change of Chakra.

And this Thunder Dun clone also contains Kakashi's cell tissue, and it has an extremely high affinity for the Thunder Attribute Chakra, so he will master 'Purple Electricity' and 'Lan Dun' so smoothly.

However, the 'Thunder Escape Chakra Mode' is a completely different field from the chakra nature changes of 'Purple Electricity' and 'Lan Dun', so neither the Hyuga Mirror's rich experience in chakra nature changes nor Kakashi's excellent cell organization can help him when cultivating the 'Thunder Escape Chakra Mode'.

In addition, Yun Yin's 'Thunder Chakra Mode' is also different from his 'Reincarnation Eye Chakra Mode'.

The former is rougher and more primitive, so the requirements for the caster's physical fitness are extremely harsh, while the latter because of the soft nature of the reincarnation eye chakra, so that as long as the caster has the reincarnation eye and masters the seal method, he can easily enter the 'reincarnation eye chakra mode', and there is no excessive requirement for physical fitness.

Therefore, the hyuga mirror is stuck in the problem of physical fitness.

In fact, this is also a matter of course, because in the general view of the ninja world, the 'Thunder Escape Chakra Mode' that has been passed down from generation to generation in Yunyin Village is stronger than the 'Blood Inheritance Limit'.

In Yunyin Village, if you have mastered the 'Lan Dun' Blood Inheritance Limit, you may not be able to become a Thunder Shadow, and some 'Lan Dun' Blood Relay Ninjas may not even be able to squeeze in the Thunder Shadow candidates.

But if you master the 'Thunder Chakra Mode', as long as you don't have a stain, the location of the Thunder Shadow is basically a certainty.

Because compared with the bloodline 'Blood Inheritance Limit', the 'Thunder Escape Chakra Mode' has more stringent requirements for ninjas, and the 'Lan Escape' Blood Inheritance Ninja may not all be shadow-level powerhouses, but as long as they master the 'Thunder Escape Chakra Mode', they have almost steadily entered the threshold of the shadow level without exception.

Therefore, the 'Thunder Escape Chakra Mode' is the same as the 'Magnetic Escape' is for the Sand Hide, and the 'Dust Escape' is the same as the Rock Hide, which is not only a reflection of strength, but also a reflection of identity and status, and the difficulty of cultivation is naturally extraordinary.

After rescuing all kinds of divergent thoughts, Hinata carefully analyzed the dilemma in front of him.

He is basically familiar with the 'Thunder Escape Stimulation Method', so there is only one thing that prevents him from mastering the 'Thunder Escape Chakra Mode', and that is physical strength.

"Kakashi and I don't belong to the category of people with superior physique, so this Thunder Clone only inherits our delicate control ability of Chakra, as well as our affinity for Thunder Attribute Chakra, but in terms of physique, there is no outstanding performance, if you want to master the 'Thunder Escape Chakra Mode', you must improve the strength of this clone..."

The lack of physical strength is undoubtedly a very broad problem, and if you can't get the right medicine for it, it may take ten or even twenty years of penance.

But Hyuga obviously couldn't wait so long, so he had to prescribe the right medicine, start to make up for the shortcomings of this Thunder Dun clone, and increase the strength of this Thunder Dun clone with the highest efficiency.

"Respiratory..."

"Muscle groups..."

Because he has white eyes to examine himself, the helioscope can quickly distinguish which parts are the shortcomings of this clone.

With a fixed gaze, he secretly thought: "The 'Yin Seal' can effectively restore the damage of the respiratory system and muscle groups, if targeted exercises are carried out, the muscle groups should be easy to exercise up to the standard, but how to exercise the respiratory system?" ”

Muscles are the easiest to exercise, but the respiratory system, which is a fragile and delicate organ, is different, there are many ways to repair the organs, there are many ways to repair the organs, such as the 'Yin Seal', such as the 'Secret Technique of Physical Activity', etc., the methods that can exercise the organs, he searched the brain, and did not find a one that can quickly take effect.

"No wonder there are so many masters in Yunyin, but the only one who can master the 'Thunder Escape Chakra Mode' is the Thunder Shadow of the past dynasties, this kind of harsh requirements for physique, if it is not talented, it is useless for ordinary people to fight even if they take their lives!"

Hinata, who was scolding his abdomen, suddenly had a thought flashing in his mind.

So he immediately left the practice field, returned to the inn, found Xiang Phosphorus who was resting in the inn, and asked, "Where is Shayin's Ziluo now?" ”

Although it was a little strange why Hinata Mirror suddenly wanted to find Shiro, Sha Yin's Shiro, Xiang Phosphorus didn't ask much, and quickly activated the 'Kagura Heart Eye', and then replied, "Found it, in the seventh practice field!" ”

"Let's go!"

Called Xiang Phosphorus, Hinata Mirror and the two came to the side of the No. 7 practice field together.

As Hinata Mirror expected, Shiro, a physical ninja, did not relax for a moment, and although it was late at this time, he was still practicing hard in the training ground.

And in the field of vision of the white eyes of the Hyuga Mirror, a large number of chakras were gathered in Violet's heart and lungs.

"Is this the 'Seven Heavens Call'?"

Hinata muttered to herself.

Xiang Phosphorus on the side asked curiously, "My lord, what are you bringing me here for?" ”

Hinata immediately commanded: "I need this breathing method that Violet is performing now, you can record his chakra trajectory, breathing rhythm, heart beat frequency and other data!" ”

Xiang Phosphorus nodded, and looked at Ziluo on the practice field intently.

The white eyes of the Hyuga mirror can see all the details of Shiro's body, and the reincarnation eye of Xiang Phosphorus can record the flow of Shiro's chakra, and at the same time, the 'Kagura Heart Eye' can also sense the changes in Violet's chakra, so under the joint efforts of the two, the true face of Shiro's 'Seven Heavens Call' is gradually revealed in front of them...

..........

The second is to serve, at dinner I actually had an earthquake here, and the buildings are shaking, which scared me to death!