The live slug said gently:

"Lord Xia Wu is really sharp! Chakra was originally transformed by absorbing natural energy through the Divine Tree.

If you encounter someone who controls the power of the sacred tree, the power of the chakra will be greatly reduced. ”

"Is it the Big Barrel Wood Clan?"

"Big barrel wood, it's really a name that hasn't been seen for a long time."

The live slug was a little surprised that Xia Wu actually knew about the Big Barrel Mu clan, but she didn't ask much, as a psychic beast, she wouldn't peek into the contractor's secrets.

Not caring about the surprise of the live slug, Xia Wu asked directly:

"Live slugs, do you know the relationship between chakra and natural energy?"

"More than a thousand years ago, there was no chakra in this world, but after the appearance of the sacred tree, it continued to absorb the natural energy of the world and produced a fruit, and since then, chakra was born."

"I see, I see."

Xia Wu looked at the sky in the distance and said casually:

"Living slug, you have such a long life, why did you sign a contract with humans? Is it because of boredom? ”

"Yes. I don't know how long my life is, but in order to pass the boring time, I will make a contract with humans to see the world. ”

The live slug replied calmly.

"Living slug, I will create a new way of cultivation and put an end to the chakra era.

You'll witness the biggest change in the history of the ninja world, and you won't get bored. ”

"I'll see, Lord Xia Wu."

"Then I'll go back first, live slug."

Looking at Xia Wu's back, the live slug reminded:

"Lord Xia Wu, be careful of Miaomu Mountain, Toadmaru has the ability to spy on the future, if he knows about the future, maybe he will take action against you."

Then, the live slug sent Xia Wu back

Xia Wu returned to Konoha Village, still in Tsunade's office.

In addition to this, he discovers that Kushina is also in the house.

Seeing Xia Wu appear, Jiu Xinnai breathed a long sigh of relief.

Although Tsunade sister has always assured that the live slugs are gentle and will not hurt the contractor, she can't help but worry.

"Boy, you're finally back, if you don't come back, Jiu Sinai will tear down my office."

Tsunade complained.

Xia Wu didn't care, and said casually:

"Wouldn't it be better to smash it, just don't have to work."

Tsunade was stunned for a moment, realizing that he had lost a lot, and the opportunity to be lazy was gone.

"Sister Tsunade, let's go to dinner together."

Kushina dragged Tsunade, and the two walked out talking and laughing.

After the three of them finished eating, Tsunade went back to the hospital to continue working, and Kushina and Natsutake went home.

"Xia Wu, when you see the Living Slug Immortal, have you solved that problem?"

"Solved, but with new troubles."

Hearing Xia Wu's story, Jiu Sinai couldn't help laughing.

She didn't expect Xia Wu, who had always been calm and calm, to make such a mistake.

Who would have thought that a powerful divine will would affect the absorption of external energy!

"Not only that, but I also got to know Chakra better."

Chakra is a chakra seed shared by the six immortals, which is equivalent to a small sacred tree rooted in the body and spirit, penetrating into the body of each living being, and passed down all the time.

Chakra cannot practice on its own, and the growth of chakra can only be driven by the growth of physical vitality and the growth of spiritual will and soul.

Kushina asked again:

"Xia Wu, what are you going to do next?"

"Although the problem of absorbing natural energy has been solved, how to start cultivating is still a problem."

Then, he stood in the courtyard with his eyes closed, entered the state of unity between heaven and man, and began to perform boxing techniques, and what he had learned in his previous life, even Konoha's physical skills, were all unfolding on him.

Xia Wu calmed his mind and observed the flow of natural energy around him with each stroke.

Some moves can absorb natural energy, while others don't.

After an hour, Xia Wu found all the moves that could absorb natural energy.

He paused, thought for an afternoon, and sorted out a new set of punches.

"This is the boxing method used to build the foundation, which can not only practice strength, but also absorb natural energy to forge the body."

As he fought faster and faster, the heat flow in his body also increased, and his hands and feet, limbs, torso, and internal organs became stronger.

Then, Xia Wu taught Jiu Sinai how to box.

"Jiu Sinai, this set of boxing methods is the foundation boxing method I created based on Taijiquan, and I named it Turtle and Snake Boxing."

After Jiu Sinai learned it, Xia Wu continued to think about how to grow it after absorbing natural energy.

His brain was racing and he began to think about the path of martial arts.

In the previous life, there is a saying that there are three treasures in the sky, the sun, moon and stars, and people have the three treasures of essence and spirit, which can be divided into three realms according to this.

At the beginning, refining was carried out, using natural energy to accelerate the strengthening of the physical body, strength was the means of combat, and forging the body was the foundation of martial arts.

Flesh, bones, and viscera, from the outside to the inside, gradually deepening.

Blood is the essence of man, and the first realm can be called blood refining, and then refining meat, bones, marrow, and organs.

Xia Wu was still thinking about it, when he heard Jiu Xinnai let out an exclamation.

"What's wrong?"

Kushina was surprised:

"When I was practicing boxing just now, I found that I absorbed a wisp of nine-tailed chakra, but it seemed to be fine.

Xia Wu groaned:

"The Nine-Tails come from the monster Ten Tails from a thousand years ago, and the Ten Tails have the ability to convert natural energy into chakra, and he naturally has it."

Then, the two walked into the sealing space of the Nine-Tails, which was still tightly bound by chains.

As soon as he saw Xia Wu and Jiu Xinnai, the nine tails scolded:

"Kushina, what the hell did you do, why did my chakra disappear a little permanently.

Jiu Sinai said lightly:

"It's nothing, it's just that your chakra has been absorbed as natural energy."

Nine-Tails looked at Xia Wu and Jiu Sinai, and was shocked to find that the strength of the two of them had become much stronger again.

In all these years, it had never seen anyone grow at such a terrible rate.

"Nine-Tails, how about making a deal?"

Nine-Tails said cautiously:

"What deal?"

"Let's let you out, but we need most of your chakra, it's permanent, do you want to agree?"

The Nine-Tails was a little moved, it had been suppressed by Xia Wu's fist intent for more than a year, and it knew that Xia Wu was a person who said the same, but it was still a little afraid when it thought of the various behaviors of the humans it had seen in the past.

Above the sealed space, the chakra of Uzumaki Mito flashed and fell silent, and did not do anything.

"You think about it, we will wait at any time, and after this time, Jiu Sinai will always absorb your chakra, don't make a fuss."

After saying that, the two left.

Nine-tails looked at the chains on his body, and thought of what Xia Wu had just said, and slowly closed his eyes.

"Xia Wu, will the Nine-Tails agree?"

Kushina said curiously.

"Rest assured, it will."

The Nine-Tails' attitude had softened somewhat, and Xia Wu knew that it would agree sooner or later.