It was very late, and Uchiha You personally sent Uchiha Shisui home to avoid any unexpected situations.

On the way, he reminded Zhishui: "You can tell the clan leader and a few elders about the cultivation method of the Cat Immortal, but don't tell others. Let the clan leader and others make the judgment."

"yes."

"Also, this training method is extremely effective, but it cannot completely replace physical training. You must continue to train as you should. Only by moving forward in tandem can you achieve the greatest growth."

"Is that so? I see. I will keep doing physical training."

The two of them talked about training and soon arrived at Shisui's house. It was a large house with three entrances, and there were even ninjas guarding the door.

"Wow, your house is really nice." Uchiha You joked with a smile, "Then don't be late tomorrow."

Uchiha Shisui suddenly smiled happily. Uchiha You was indeed different. When he saw the gate of his own house, he just sighed nonchalantly.

Unlike the friends I made before, as soon as they knew my situation, they would immediately become timid and we could no longer be friends.

With extensive knowledge, rich experience, gentle personality, unrivaled popularity and powerful strength, Uchiha You is worthy of being the only contractor chosen by the Only Cat Immortal. He is indeed an extraordinary and outstanding person.

"Brother You!"

"Well, what's wrong?"

"Thank you very much for your hospitality and teaching. I have gained so much today."

"You and I are both of Uchiha blood. Since we have met by chance, we are a family."

"We are one family and we don't have different opinions."

"Hi!! I won't be late tomorrow!"

"Okay, see you tomorrow."

…

When everything is going right, time flies.

Two days passed in the blink of an eye.

During these two days, Lin and Shinichi completed the treading water training one after another. In addition to treading water with weights, Uchiha You began to teach them some fighting skills and corrected some very fatal unnecessary movements.

As for real battlefield survival skills, they will definitely not be taught. After all, what Uchiha Yu knows himself is not suitable for the upcoming large-scale war.

Although a large number of records have been seen in the storage room, they are mainly based on techniques from the Warring States Period, which may not be suitable for the current warfare model.

If I teach this unproven stuff to three Genin, wouldn't that be cheating them?

"thump"

"I @%￥##@#@@"

Amid the howling noises of Uchiha Obito, Uchiha You helplessly turned his head and looked at the river: "How many times has this happened?"

Shisui covered his mouth, trying to suppress the urge to laugh, "This is the 14th time."

"We started at half past eight, and it's not even nine yet..."

"This brat Obito... it's not that the monkey is hard to subdue, he was just sent by the monkey to torture me!"

Uchiha Yuu stood up suddenly, flashed to the surface of the river, pulled Obito out of the water, and without waiting for Obito to give his unique silly grin, he threw the guy onto the shore.

Uchiha You's actions made Obito scream: "Ah, I will succeed next time, I don't want to..."

"No, what you want is weight-bearing physical training!"

He rudely interrupted Obito's screams, put a 40-kilogram weight on him, and finally whispered considerately: "If you dare not obey, I will have to punish the entire team."

"Obito, you don't want Lin to run with you, right? Her body is so weak..."

"Are you a demon?"

"No, no, no. Between being driven crazy by you and exhausting yourself to death, I choose to make you work harder."

Uchiha Obito closed his mouth, his eyes showing fire but he didn't dare to curse, for fear that Uchiha You would use his mistake as an excuse to punish Lin again.

Seeing that Obito dared not speak out, Uchiha You felt much better: "Build a wall around Konoha Village, go ahead!"

Seeing Obito running out of the training ground angrily, Shisui couldn't help but worry: "Obito-san seems very angry. Will he get hurt if he runs like this?"

Uchiha You took a look and didn't take it to heart: "Don't worry, this speed is still within his tolerance range."

"ah?"

"Shisui, you can't underestimate Obito. From a certain perspective, his talent is even higher than yours."

"It's just that his mind is too active to show his talent."

"Really?" Shisui was extremely surprised and couldn't help but look at Obito.

Until Uchiha Obito disappeared in the forest, he still couldn't figure out where the talent of that stumbling figure lay.

"Stop looking at it. Practice the moves I taught you again. Let me see if there's anything that needs to be adjusted."

"yes."

"Focus, don't think about Obito. When he comes running back, you'll be able to see him at a glance if you pay attention."

"yes!!"

I have to say that Uchiha Shisui's talent is truly visible to the naked eye. His movements this time are more skillful and smoother than the previous time, and the speed of his improvement is too obvious.

Uchiha Yuya couldn't help but praise: "Although it's not a perfect performance, but in my current state, I think there is nothing that needs to be adjusted."

"Don't be happy yet. Next I have to see how you perform in chakra extraction and retention."

"yes!"

This is Uchiha You's attitude towards chakra, which is completely different from other ninjas.

Normal ninjas use chakra as they need it. They extract chakra from cells when they need it, then mix it with spiritual energy before using it in battle.

But Uchiha You thought that this was too slow, and the sudden and violent operation was very bad for the body and could easily cause problems and injuries.

Ninjas who often fight on the front line will suffer from various injuries even if they take good care of themselves, such as the Tsuchikage Ohnoki.

The ninjas who squatted in the back peacefully were still alive and healthy even if they never put down their cigarettes, such as the Third Hokage.

Uchiha You believes that chakra must be extracted in an orderly manner, stored for a long time, maintained in normal times, and exploded in times of battle. This is a complete system. Relying solely on bursting out in times of battle is an evil way of seeking quick success and instant benefits.

Well, neon spirit culture is popular in the ninja world, so it is not surprising that people are eager for quick success.

Moreover, the name of the profession of ninja is very convincing. A person who can endure everything is a ninja. To use chakra, one must first endure the inevitable pain in the body when the chakra is running.

If a ninja is trained from a young age, over time his body will adapt, the pain will decrease, and he may even get used to the pain and feel uncomfortable without it.

But Uchiha You just couldn't accept it, even though this kind of pain was not as painful as the blow of Sichuan cuisine to his **.

Why did Uchiha Yuu still take the risk of absorbing natural energy even though he knew it was dangerous?

First of all, in the worldview of the previous life, cultivating immortals is the most noble and extraordinary path. If you don’t give it a try when you have the chance, can you still be considered a member of the Yanhuang race?

But they were able to hold out until they discovered that fire was harmless because a small amount of natural energy could relieve the pain, the kind that spread throughout the body, like the pain of rheumatoid arthritis.

The techniques that Uchiha Yuu taught Shisui were all key points to eliminate pain and the harmful side effects of chakra. They could also retain chakra in the body for a long time, allowing the body to adapt to chakra to the maximum extent, and enhancing the output power and controllability of chakra.

In the traditional understanding of the ninja world, chakra is an extraordinary power that can kill people. Even medical ninjutsu requires the consumption of life in order to heal injuries.

But Uchiha You believes that this is not absolute.

Because the ancestor of chakra, Kaguya Otsutsuki, is truly immortal.