I'm in Naruto Cultivation

Chakra is formed by extracting spiritual energy from cells and then merging with each other. So where does the ** energy in the cells come from? Naturally, recovery is done through eating, etc., so to a certain extent, sexual energy can be equated with physical strength.

In the process of refining chakra, cells are like machines for producing chakra.The continuous operation of the machine means the constant wear and tear. When it reaches a certain level, the parts must be replaced, and if it is replaced by cells, that is cell division.

However, just as some parts of the machine cannot be replaced, the machine will be scrapped after a certain time.Cell division is also limited to a certain number of times. After a certain number of times, the cell will no longer divide, and then die and die.

Therefore, the immortals who are as strong as the Six Paths of the God of Creation cannot escape the ending of physical death, and can only exist in the form of spiritual bodies or chakras.

"Then, why didn't Kaguya die? And that big toad immortal called Toad Maru has also lived for thousands of years!"

Xuan Yue has deep doubts in her heart, but she can only bury it in her heart.

Kushina didn't know what he was thinking. Seeing that Xuanyue had already extracted the chakra, he immediately took out a chakra test paper to test the chakra's affinity.

Xuan Yue injected chakra into the test paper as required, and immediately, the test paper became wet and then divided into two.

"Wind, water, not bad!"

Xuanyue was quite pleasantly surprised. Water Dun was nothing more than Wind Dun's aggressiveness.

"It's the same as mine, but, Xuanyue, our whirlpool clan is born with a third phase, generally women are yin, and men are yang!"

"Positive?"

Xuan Yue raised her eyebrows. The so-called compatibility does not mean that a person only has this attribute, but a natural preference, or it can be described as affinity.

That is to say, wind and water are the two nature changes that Xuanyue is born with, and it is easy to use wind and water to create water and wind with chakra.

"I only explained the five attributes of wind, fire, water, earth, and thunder before. In addition, there are yang escape and yin escape."

Kushina explained carefully: "Yin Dun is the creation of form from nothing. Yang Dun is the force of life that breathes life into everything."

"for example……"

Saying that, there was a chakra reaction in Kushina's body, and then a golden chain roared out from behind.

King Kong blockade!

The unique sealing technique of the Uzumaki clan can suppress tailed beasts and has considerable destructive power!

"This is the unique sealing technique of our Uzumaki clan - Vajra Sealing, which belongs to Yin Escape. Xuan Yue, if you can master Yin Escape Chakra in the future, then my sister will teach you this sealing technique!"

Kushina promised with a smile, and then took back the chakra chain under Xuanyue's reluctant gaze.

Xuanyue couldn't help but ask: "Sister Jiuxinai, how do you practice Yin Chakra?"

Kushina frowned, smiled and held Xuan Yue's head with one hand: "Well, you can't be too ambitious,"

So shameful...

Under the violence of Kushina, Xuan Yue naturally couldn't resist, and could only be rubbed with red hair.

The day passed quickly. At night, in front of the desk, Xuan Yue wrote down seven changes in chakra properties in his notebook. That is, wind escape, fire escape, water escape, earth escape, thunder escape, yin escape, and yang escape.

During the day, Kushina had already explained these seven attributes, but the explanation was not very in-depth, or she did not master them in depth either. Moreover, in Minato's notes, I saw a lot of records about changes in properties, but there was no discussion of the deep-seated relationships between these seven attributes, only simple mutual restraint diagrams.

"Chakra is like the mana in the immortals, ninjutsu is the magic power, and the understanding of the seven attributes is the Taoism of the immortals!"

"Without mana, it's useless no matter how high the Dao Xing is. But if the Dao Xing is low and the mana is higher, the magical power of magic has an upper limit."

"Ninjutsu is the same!"

In Xuanyue's view, chakra should be ranked first in ninja practice, because only one who has chakra can be considered a ninja.The second place is not ninjutsu, but the change in the nature of chakra, and ninjutsu should be ranked last.

Of course, this is under the premise of having enough time.

If the nature of chakra is changed,