It is said that after cultivating the Blood Inheritance Limit yesterday, the world has always felt that something is wrong with the body from this morning. Maybe the chakra was consumed a little too much yesterday, the world thought. However, with caution. That afternoon, the world came to the Uchiha clan's medical room. She was received by Kurino Uchiha, a short-haired girl in her twenties who had healed her.

When it comes to the Uchiha family's medical system, it can be said that the configuration is almost female. Why is this so? And both psychologically and physically, most women are not very comfortable with the atmosphere of the battlefield. Plus women are better at being attentive than most men. Therefore, the delicate work of medical ninjas was gradually handed over to the women of the Uchiha clan. And this choice has made it almost customary for women in the clan to become medical ninjas. Of course, the world is different from them. At the age of six, he completed the trial within the clan, breaking the record for trial age in the history of the Uchiha clan. She told all the men what the power of women was.

"Miss World, you shouldn't have cultivated quietly as the doctor said." Kurino Uchiha pulled out his right emerald green chakra that was placed on the world's chest and said to her. Probably because of the world's achievements, it is an extremely remarkable existence for this power-advocating Uchiha clan. Therefore, Uchiha Kurino added the honorific title of "Miss" to his conversations with the world, which was by no means an honor for the world as Uchiha Tajima's daughter.

"Kurino-chan, just call me the world, don't call me "Miss" or "Miss". The world waved his hand and said with some embarrassment.

"Alright! World. Uchiha Kurino said helplessly: "Don't want to change the topic, world, you didn't listen to the doctor, and did the cultivation of ninja!" ”

"There's no big move," the world opened its eyes and replied, "I'm just cultivating chakra." "Because there is no systematic summary of the research world of the Blood Inheritance Limit, she is not prepared to tell outsiders the news now. Just like when the world was six years old before, the "Chakra Nature Change Cultivation Summary" was also taken out after it was completed.

Hearing this, Uchiha Kurino frowned and said, "You used up your chakra when you were cultivating, right?" ”

"That's right!" Seeing that he couldn't hide it anymore, the world simply admitted it generously. Then he said, "Yesterday, I was practicing ninjutsu and consumed a lot of chakra. I woke up this morning feeling a little uncomfortable. ”

"You know what? World, you have suffered internal wounds! It takes a lot of time to fully recover. Despite the fact that ninjas possess chakra, making recovery faster than normal people. However, once the ninja consumes a large amount of chakra during the injury, it will exacerbate the condition. Your current wound has been faintly cracked, and if you still mess around, then the Six Dao Immortals won't be able to save you! ”

"Is it that serious?" The world's eyes widened and said, "Is there a way to recover from injuries quickly!" ”

"Don't doubt my professionalism! Of course, there are solutions. Uchiha Kurino said an answer that was unexpected in the world, after all, this answer was somewhat incomprehensible to the world.

"Eh~, is there really one? If there is such a solution, why not use it? The world asked subconsciously.

"Because this method consumes a certain amount of chakra." Kurino said.

"So what does it matter?" The world asked, frowning.

"The consumption of this chakra is permanent." Uchiha Kurino said with a wry smile as he stood up and said to the world, "I'll go get something for you." With that, the man walked out of the medical examination room. About half a minute later, Kurino reappeared in front of the world's eyes, and handed over a thick, old, and seemingly historical book in his hand to the world, and said, "Open it to three hundred and forty-three pages!" ”

The world that took the book was skeptical, and turned the book to the page that Kurino had said.

Seeing that the world began to read the contents of the book, Kurino also began his own explanation: "This book is the origin of the Uchiha clan's medical ninjutsu. Who wrote it? This is no longer possible to verify, so I won't mention it for the time being. This book describes the composition of all the meridians, tissues, and organs in the human body. It also expounds the true meaning of Chakra. ”

"Chakra's true meaning? Haven't the Six Dao Immortals already explained? The world looked up and said in bewilderment.

"That's right! Chakra is a combination of mental energy as well as physical energy, and there is nothing wrong with that. But in this book, the existence of the two is explained more clearly. Mental energy is a force generated by the mental movement of the human brain, and physical energy is the power that the human body digests after ingesting food. Although it is said to be a kind of power, there is nothing wrong with thinking of chakra as a substance within the body. ”

"Chakra reflux system!" The world screamed in surprise, as if it had seen something incredible.

"I was surprised, to be honest, I was surprised when I saw this!" Kurino smiled lightly and said, "The person who wrote this book found out that the ninja used a lot of chakra. Even without eating, it is possible to recover all the chakras after one night. So, where exactly did this chakra come from? After his or her research, he or she finally discovered the reflux system of the chakra. With this as an example, let's take the technique of Howe Fireball as an example. The ninja shoots the hot chakra out in the form of a fireball, and after the fireball loses its stable structure, the chakra will return to its original posture and return to the ninja's body by relying on the connection with the main body. ”

"I see!" The world is easy to understand, and by the way, the mystery of the return of the chakra of the shadow clone is solved.

The author believes that matter and energy will neither increase nor decrease for no reason. If this happens, then it must be the matter or energy that is transformed into another new substance and energy. Medical ninjutsu, on the other hand, is the art of repairing human wounds. In general, the purpose of this procedure is only to repair the wound. And when the patient is critically ill, it has to convert the patient's chakra into the cells that the patient lacks, so as to repair the body. In this operation, the consumed chakra will be permanently consumed. Therefore, after each seriously injured ninja is rescued, the chakra will be reduced to a certain extent, which will greatly reduce the ninja's strength. Therefore, our medical ninjas generally treat the wounds of seriously injured patients until they are no longer in danger of life, and then come to the patient's body to repair themselves, so as to eliminate side effects. ”

"Whew~", the world exhaled, closed the book, and stood up. He bowed to Kurino and said, "Thank you medical ninjas for your hard work for us, I will listen to you and recuperate." ”

"Yikes!" Li Nai looked at the world and bowed to her, quickly helped her up, and said a little embarrassed: "It's nothing!" Aren't you protecting us from the front! No need to be so polite! ”

Then, the two laughed and talked. Until the world saw that the sky was a little dark, and said to Kurino: "Kurino-chan, can I take this book back and read it?" The world gestured to the book in his hand.

"Eh~! Does World-chan also like medical ninjutsu? Kurino said with a smile.

"Hmmm! I've talked so much to Kurino-chan today, and I'm also a little interested in medical ninjutsu. Add to that the fact that I've been off these days, and if I don't have any books to read, it's boring! The world laughed.

"Then let's take the world sauce back!" Li Nai said generously.

"Then I'm sorry!" The world picked up the book, said goodbye to Kurino, and left the medical examination room.