The Qi Sea System

He withdrew the chakra back into his body, then neither moved it nor thought about it.

A moment later, Hyuga Ningyuan felt the warm sensation had completely disappeared.

"Chakra really can't be stored—it's used as it comes, a bit like physical stamina!"

Today's stamina can't be saved for tomorrow; if you exhaust it, resting a while will restore it, but overexertion could lead to death from fatigue.

This aligns highly with chakra's properties—after all, chakra is composed partly of physical energy!

But Hyuga Ningyuan was a transmigrator, his mind full of ideas.

Chakra originates from physical energy, but it's not physical energy itself—why can't it be stored?

Hadn't Tsunade done it?

But Ningyuan, who wanted to cultivate immortality, declared that storing chakra in the brow center was entirely the wrong path; it should be stored in the Qi Sea instead.

Actually, it should be called the Dantian, but the Naruto World already had something called the Chakra Dantian—the place where physical and spiritual energy merge to produce chakra.

So Ningyuan gave the storage location a different name.

That's right, as an instinct engraved in the genes of his people, coming to the Naruto World meant he had to try cultivating immortality!

It wasn't like no one had succeeded—didn't the Three Great Sage Lands have monsters that had lived for over a thousand years?

If monsters could do it, there was no reason humans couldn't!

And Hyuga Ningyuan even had a genuine cultivation method in his hands!

It wasn't long—only sixteen characters.

Refining Essence into Qi, Refining Qi into Spirit, Refining Spirit into Void, Refining Void into Dao!

"'Refining Essence into Qi' is simple—chakra is that Qi, and I've already completed it. But the problem is where the Qi is stored. Could it be that due to different physiques, people in the ninja world don't have a Qi Sea?" Ningyuan extracted another clump of chakra, let it wander around the Qi Sea in his abdomen, and flipped through the meridian section of the Shinobi Knowledge textbook.

"It seems there really isn't anything like a Qi Sea here. So people in the ninja world don't have one?" Hyuga Ningyuan frowned slightly, then shook his head.

No, that wasn't right. People in the ninja world did have a Qi Sea, and its capacity was enormous!

Otherwise, where were the Nine-Tails, Eight-Tails, and the other tailed beasts sealed?

A place that could hold a tailed beast could hold an immense amount of chakra!

Even if ordinary people weren't as exaggerated as the Uzumaki Clan, storing something smaller shouldn't be a problem.

From One-Tail to Eight-Tails, none of them used the Uzumaki Clan—Nohara Rin could even store the Three-Tails!

So the question was, where was this place that stored tailed beasts?

"If this place could be found by following the chakra meridians, someone would have discovered it long ago. For one thing, Hiruzen Sarutobi's chakra had already traveled through every meridian in his body, and he never found it!"

"This means that aside from Sealing Jutsu, there's currently no other way to open this place!"

I have to learn Sealing Jutsu?

Hyuga Ningyuan thought it over and felt the path shouldn't be this difficult. He'd never read a Wuxia novel where opening the Qi Sea was so hard—martial arts prodigies who developed inner energy in a single day were everywhere.

"There's another possibility: different systems! Cats have their ways, snakes have theirs. Chakra runs through the Three Meridians and Seven Chakras, so of course it can't find the Qi Sea!"

"Sealing Jutsu is powerful enough to seal Kaguya above and the Nine-Tails below—maybe that's also because of different systems. The Uzumaki Clan's generally massive chakra reserves might not just be a physical issue."

But there was a contradiction here: how to explain Naruto's chakra, with no one teaching him?

"Maybe the Uzumaki Clan, while researching Sealing Jutsu, accidentally stumbled into some Eight Extraordinary Meridians system, and that memory was inherited in their bodies!"

"And that physique is called the Sage Body?"

"Senju Hashirama?" Ningyuan thought of this freak whose chakra reserves surpassed Naruto plus the Nine-Tails. Could it be that he had opened his Qi Sea, which was why his chakra was so massive?

But because he followed the chakra system, even though his Qi Sea was open, he himself hadn't noticed?

As for how he opened the Qi Sea system—his wife was Uzumaki Mito, and he also knew Sealing Jutsu!

Was this possibility real?

If it were Senju Tobirama, it would be absolutely impossible.

But if it were Senju Hashirama, Ningyuan would find it completely reasonable!

He was just that kind of absent-minded person—using the Qi Sea without even knowing it was perfectly in character!

And then, Wood Release!

Many said Wood Release was a Kekkei Genkai or Kekkei Tōta, but no one had ever replicated it.

Earth plus Water gave Lava Style, not Wood Release.

So the question was, could it be that Wood Release was actually something from another system?

Gold, Wood, Water, Fire, Earth?

Hyuga Ningyuan believed it was possible, and highly likely!

Because the Uzumaki Clan also had a technique called Adamantine Sealing Chains!

Gold!

"Qi Sea system, Sealing Jutsu, Gold, Wood, Water, Fire, Earth!"

"Chakra system, chakra—Earth, Wind, Water, Fire, Lightning!"

Fully deciphered!

The theory was verified, but Ningyuan's problem remained unsolved: without knowing a Sealing Jutsu, how could he find the Qi Sea?

Hyuga Ningyuan thought for a moment and found a way.

He closed his eyes and meditated.

He extracted physical energy, but did not merge it with spiritual energy.

What was this physical energy called now?

Internal force!

That's right—internal force was the inner qi produced by the body refining food, and its composition was completely identical to physical energy!

And internal force traveled through the Qi Sea system!

"So hard!" The moment Hyuga Ningyuan tried, he discovered the difficulty. While meditating, he couldn't control the generation of spiritual energy, and once both spiritual energy and physical energy appeared, they would uncontrollably merge into chakra!

This was because attention and spiritual energy were highly unified. As long as he focused on physical energy, spiritual energy would follow his attention over to the physical energy side.

Unless he didn't place his attention on physical energy at all, letting it move on its own, or he completely stopped generating spiritual energy.

The former required an external martial arts technique, like Tai Chi or the Eighteen Dragon Subduing Palms.

But did Ningyuan have anything like that?

What about generating only physical energy without any spiritual energy?

As long as a person was thinking, they generated spiritual energy. If he wanted to avoid generating it, he would have to reach the legendary state of Mindfulness and Non-Attachment, Formlessness and Impartiality!

"No wonder ninjas can never find the Qi Sea!"

So difficult—this almost completely blocked a person from the ninja world from finding the Qi Sea!

Fortunately, besides being a transmigrator with a wild imagination, Hyuga Ningyuan also had a cheat!

[You performed a Chakra Extraction. Chakra Extraction EXP +1, General EXP +1. Current level: LV1 (1/100)]

[You performed an Internal Force Extraction. Internal Force Extraction EXP +1, General EXP +1. Current level: LV1 (1/100)]

[You performed a Magic Meditation. Magic Meditation EXP +1, General EXP +1. Current level: LV1 (1/100)]

[Magic Meditation]!

That should be spiritual energy, right? Mages used spiritual energy, didn't they?

He glanced at the main panel:

[Name: Hyuga Ningyuan (Ningyuan) Gender: Male Age: 5 Skills: Sleep LV1 (8/100) Diet LV1 (1/100) Marching LV1 (1/100) Chakra Extraction LV1 (1/100) Internal Force Extraction LV1 (1/100) Magic Meditation LV1 (1/100) Talents: None General Experience Points: 6]

He tapped on the Internal Force Extraction tab. Behind (1/100), a plus sign was blinking unsteadily.

"In this life, my cultivation, my enlightenment, my strength—all rely on myself!"

"Deep Blue, add points!"

All 6 General Experience Points went into Internal Force Extraction, raising its level straight to 7/100!

"Hm?" In an instant, Ningyuan sensed a subtle change. He immediately closed his eyes and extracted physical energy!

"So much!"