"Medical Basics", which is a book that the world borrowed from Kurino. Because it involves some knowledge that the ritual room does not have, the world is still quite interested in this book. However, there is no time to read today. Although the dim sky can be overcome with an oil lamp, the seriously injured body cannot be ignored. According to Kurino's proposal, a good routine can speed up the recovery of injuries for ninjas, so the world decides to look at it tomorrow.

Nothing was said all night

The next day, the world was awakened by the movement downstairs. It's not that the world usually wakes up late, but the world in the body is already more sleepy than usual. Coupled with the senses of being a ninja, the world has an extremely keen perception of the things around it even in its sleep. It is this perception, coupled with the quiet environment in the early morning, that makes the originally subtle sounds downstairs extremely clear in the ears of the world.

"······ today, are they leaving?" The world struggled to get out of bed and straighten his clothes. Then he opened the door to the room and walked down the stairs step by step. Then, she saw the five Uchiha Tajima, Madara, Izuna, Hibiki, and Viper wearing armor and preparing to go out.

"Miss World, you're awake!" Uchiha Kiyomasa cleaned up the dishes and chopsticks on the table, and with a casual glance of his eyes, he saw the world coming down from upstairs and said.

"Sister!" Madara, Izuna, Hibiki, and Viper shouted in unison.

"Why don't you sleep a little longer?" Uchiha Tajima said with a frown as he looked at the world.

Probably because of the low blood sugar in the morning, the world looked disgusted and didn't want to speak. She looked at the five people in front of her, didn't say anything, bent down towards them, and saluted.

"Let's go!" Uchiha Tajima took the world's act of not talking as if she was still having a small temper, so she turned around and left.

And the remaining little guys, hearing Uchiha Tajima's words, also waved goodbye to the world one after another, and finally turned around and left.

"Whew~", the world watched their figures gradually fade away, until the obstacle blocked her vision and she couldn't see them, the world turned around and sat quietly at the table.

"Pimple~", Uchiha Kiyoshi gently placed the bowl in front of the world, and then put down a pair of chopsticks. Then she sat down and began to eat her breakfast for the day. That's when the world started to eat breakfast. However, perhaps because of Madara's battle, the world has been a little sluggish since just now. After eating the food, the world walked up the stairs without saying a word, returned to his room, and closed the door.

One minute······ Two minutes ······ An hour, gradually, the world has been sitting cross-legged on the floor for almost an hour. Moreover, she has always maintained this daze posture. "Whew~" Finally, the world exhaled a big breath. I set my eyes on the book "Medical Basics" next to me. Then, she picked it up.

Perhaps, reading a book is the best way to divert your mind. Slowly, the world began to be drawn to the contents of the book.

Looking at the world and reading medical books so seriously, it makes some sense to say that she is interested in medical ninjutsu. However······ That's right! She really had that in mind. On the battlefield, it is very common for ninjas to get injured, and if there is a medical ninja who can protect himself, he shuttles through the battlefield to give the most timely treatment to his companions. Well, the outcome of the battle may not be the same.

Of course, the world will watch the medical ninjutsu aspects of this book carefully. And the rest of the content, she is not ready to let go. The chakra reflux system starts with asking questions, making conjectures and hypotheses, making observations, making experiments, and collecting and collating relevant information and evidence to finally reaching conclusions. It can be said that every step is very rigorous, and it fully explains what kind of existence Chakra is. Chakra is the power of ninjas through the combination of mental energy and physical energy, and every day, ninjas can increase a little of their own chakra through cultivation. And insisting on continuous cultivation can make the volume of chakra in the body become more huge, and hitting people will naturally be more painful. And the process of using chakra, using ninjutsu, is like a person swinging a fist, no one is after throwing a fist, the fist is gone. Then, the act of using ninjutsu is seen as a fist, and the characteristic of chakra reflux is seen as a closing fist. Between this swing and harvest, Chakra's way of reincarnation is all in it.

"Hmm~", the world unconsciously made a gesture of deep thinking, only to see her right hand clasp her chin, slightly lowered her head, and thought: "If the volume of the chakra is large enough, and the speed of swinging the fist (releasing ninjutsu) and closing the fist (chakra recovery is the chakra return speed) is fast enough, then does it mean that the ninja is invincible?" ”

The world couldn't help but turn on the power of the writing wheel, and quickly flipped through the content of "Medical Basics". In addition to writing down the locations of meridians, tissues, organs, and so on, the world has also written down other theories in this book. As a result, the world found that if there was really such a ninja in this world, his chakra would be extremely large, and even if he kept releasing his chakra, he could quickly recover. So, such a ninja is really invincible! Or you would say, invincible? If it doesn't exist, as long as it keeps consuming it, won't it? To this end, the world has its own answer. Because the consumption of chakra will not exceed the recovery of chakra, and ninja is a life that can be tireless as long as there are enough chakras. Therefore, the intention to consume such a ninja is to achieve the goal of winning, which does not exist. And in terms of having enough chakra to avoid resting, I Airo, a human pillar who has never slept before, can be used as a reference.

"Perhaps, this is the path I should take." The world thought so at this point. At this moment, the world has set its own path.

As a ninja, the world knows itself better. Chakra, for example, is a constant cycle in the body. In Medical Basics, speeding up the chakra cycle can speed up the body's metabolism, so that ninjas can quickly recover from injuries without sacrificing a portion of their chakra. And, combined with food, the world can also use this to quickly increase the amount of chakra. Of course, there are side effects to this approach. Because the cells in the human body have a certain number of divisions, and when the number of times is used up, the person will naturally die. Therefore, this method should also be used with caution.

Suddenly, when the world saw that it was written in the book that the life span of human beings was 800 years old, it was a little puzzled. Is it true that human beings have a lifespan of 800 years? The world subconsciously took a look at this "English-Chinese dictionary", and according to the oldness of it, the world thought: "How long ago did people have a lifespan of 800 years!" Isn't it the period of the Six Dao Immortals? ”