Today is the 100th day that Uchiha You has been absorbing natural energy.

He felt the change, the speed of absorbing natural energy was getting faster.

In fact, it was not his initiative. All the natural energy of fire attribute in the entire Konoha Village centered on the courtyard was restless and actively gathered towards him.

The natural energy of fire attribute automatically squeezed out other attributes, forming a red energy vortex, which surged into Uchiha Yu's body and integrated into his meridians without any hindrance.

[Too fast. Really too fast.]

[It’s a bit scary…]

[But I don’t feel any discomfort, so I should be fine…right?]

[No, it’s too comfortable. I… can’t stop…]

The natural energy of the entire Konoha Village is rioting.

If there were a master of immortal arts in Konoha Village, he would be able to sense the terrifying vortex of natural energy and follow the flow of energy to find Uchiha Yu.

Fortunately, there were no powerful immortals in Konoha Village at that time, and there were not even any ninjas who could vaguely sense natural energy.

Hokage Sarutobi Hiruzen is a born politician, and the Anshi Village of Ninja Danzo is obsessed with conspiracy. People with dirty hearts are not qualified to feel the natural energy.

Tsunade is one of the three ninjas. Her grandfather is the strongest master of celestial arts, and he passed on to her the gift of sensitive natural perception. But Tsunade's heart is not at peace, and she even suffers from a psychological disease called hemophobia, which is like a thick black cloth covering her eyes, and she can no longer sense natural energy.

Besides, Tsunade is currently away from home and not in Konoha Village.

Jiraiya, the Toad Sage, has a pure heart and has made great progress in practicing the magic of Myoboku Mountain. Of course, he can sense the changes in natural energy, but he is stranded in the Rain Country and not in Konoha Village.

The scientist Orochimaru truly understood natural energy only after he found Jūgo twenty years later. He gained an intuitive understanding of natural energy from this child who could automatically transform into a sage, and developed a curse seal, only then did he formally understand natural energy.

Because no one knows, there is the greatest security.

Without anyone to disturb him, Uchiha You gradually entered a state of oblivion, his mind wandering in the void. The natural energy of fire attribute in his meridians became stronger and stronger, and finally forced the last bit of chakra out and back into his body cells.

There is only pure natural energy in the meridians, and the speed of the red torrent naturally increases, creating a stronger suction force. As more natural energy pours in, the red torrent becomes denser and denser, gradually showing signs of atomization.

The thick atomized natural energy flowed at high speed in the meridians, and in Uchiha You's natural state of tranquility and inaction, it converged on the Ren and Du meridians in the center of the body.

From the Qugu point near the penis, it moves upward along the midline of the body, driving the Qi and blood to surge upward. After meeting the head, the Qi and blood are stimulated, Yin and Yang are in harmony, and the nature of the blood changes slightly.

[So this is what is called the meeting of dragon and tiger, the beginning of yin and yang, it is really... so cool! ]

After the intersection, the natural energy turns around and goes down along the Ren and Du meridians, passing through the yin and yang meridians of the human body, and converges at the Qugu point again.

The two natural energies collided with each other, causing ripples and forming a resonance with the point three inches above the Qugu point. The outline of the Dantian that did not exist in reality became clearer and clearer.

[Is this the Dantian that I have been searching for but could never find? It turns out that the Dantian is not found, but created by oneself.]

The natural energy after the collision and shock will turn upward again and start a new round of cycle.

This went on for twelve rounds. Uchiha Youru lost his external perception as if struck by lightning. He inexplicably felt a sense of falling at a very fast speed. When he opened his eyes again, he found himself in a chaotic space.

The red mist was rising in the space, just like the red clouds before a rainstorm. The depressing atmosphere hit Uchiha You, and his light and peaceful state of mind gradually became unstable.

He felt a sense of crisis, as if his mental breakdown would lead to fatal danger.

At the same time, something was brewing in the red mist. Uchiha You's intuition told him that the thing brewing was the hope of eliminating the danger, and he couldn't help but urge it.

[Hurry up, hurry up, no matter what the change is, come faster, faster! ]

At the same time he encouraged himself.

[Hold on, I won't die over such a small matter. ]

I don’t know how long I held on, but suddenly there was thunder in the clouds and the thick red fog condensed into red raindrops, dripping down.

Uchiha You's mind suddenly relaxed, an unprecedented ecstasy surged up, everything he felt and knew became clear and transparent, and he felt as refreshed as if he was flying.

Super cool!!!

Although Uchiha You had never smoked grass in his life, he felt that it was more comfortable than smoking grass.

If this is what cultivating immortals feels like, then being obsessed with it is only natural.

Just when Uchiha You was immersed in cultivating immortals, the red raindrops became more and more numerous and larger, and a rainstorm broke out in the space.

The red fog faded quickly, and when it was about to disappear, layers of red fog poured in from all directions and immediately turned into heavy rain.

Uchiha You watched as water began to accumulate below the space. There was clearly no ground, but rainwater just accumulated out of thin air and formed a small puddle.

As the rainfall continued, the water surface gradually expanded, and Uchiha You's mind became clearer and clearer, breaking free from the intoxicating feeling of pleasure.

He looked at the gradually growing puddle, his heart filled with peace and joy.

This is a feeling of happiness.

When the body of water became large enough to be called a pool, the influx of red mist stopped and the red rainfall gradually ceased.

Uchiha You felt himself rising involuntarily, his perspective became farther and farther, his speed became faster and faster, and soon he could see the entire picture of the space.

It was an oval world shaped like an egg, with a distinction between up and down, but no difference between heaven and earth. Above was a faint red mist, and below was a sparkling pool.

【Dantian! 】

Intuition told Uchiha You that this was Dantian, a miracle that existed between reality and illusion and could store natural energy.

And he, Uchiha You, had just condensed the gaseous natural energy into liquid, greatly increasing the density and purity of the energy, which should be called foundation building.

[It has been exactly one hundred days since I absorbed the first red light spot, the hundred-day foundation-building period.]

[What will happen if I cannot complete the foundation building today? ]

Uchiha You didn't think any further. He had already successfully established his foundation. There was no point in thinking about things that were impossible to happen.

As the rising feeling became stronger and stronger, he suddenly woke up and found himself lying on the bamboo couch in the posture of a reclining Buddha.

This was the sleeping position he had adopted unconsciously. It was obviously a strange and twisted posture, but with the natural energy flowing through his meridians like rivers, he could feel his body more comfortable than he had imagined.

It’s like the wonderful feeling of comfort beneath the muscle pain when you successfully perform a yoga move and stretch your body to the limit.

Now he doesn't feel any pain and feels more comfortable because of it.

Wherever the natural energy in the meridians flows, it is like the earth nourished by spring rain, awakening vitality.

Uchiha You felt that every cell in his body was cheering. The rich natural energy turned into powerful nourishment for the cells, driving his body to become stronger.

It is indeed the foundation building.