The hot summer in the ninja world is not as unbearably hot as in the previous life. Perhaps it is because of the generally high vegetation coverage rate. The air is indeed unusually comfortable. As long as you don't expose yourself to the sun, it is not so unbearable for a ninja's physique.

Under the shade of a huge tree, Mizuki and Sakura were sitting on the ground, eating lunch and taking a break. After a morning of practical training, the free time at noon was a rare time for teachers and students to have a question-and-answer session.

"Teacher Mizuki, why is the power of your chakra scalpel so much greater than mine?" A few days of sparring allowed Sakura to adapt to the high-intensity combat that she had rarely experienced before. The current level was barely enough. More rigorous training might even cause harm to her incompletely grown body.

However, with Haruno Sakura's control, it stands to reason that her use of the chakra scalpel should not be much different from Mizuki's. But in fact, the lethality of the two is completely on a different level. In addition to the difference in physical strength, there may be deeper reasons.

"It's great that you have this ability to observe." Mizuki was very satisfied with Sakura's recent progress. "The reasons behind this are actually quite complicated, but generally speaking, it should be related to the properties of chakra."

"Chakra attributes? Are you referring to the five attributes of chakra?"

"Yes, but strictly speaking, chakra should be divided into seven types?" Shuimu corrected, "You must have seen the five elements of escape techniques, but didn't you notice that there are many ninjutsu that obviously cannot be divided according to the five elements?"

"That's true." Sakura thought for a moment and said, "The family secrets of Ino's team, the three people, seem to have nothing to do with the Five Elements Escape Technique. So what is it?"

"Well, the Ino-Shika-Chou family in the village is also quite famous. Although their family ninjutsu are very different, they can generally be divided into two categories, Yin and Yang."

"Yin attributes and Yang attributes?" Sakura was confused about the two types of chakra that she had never heard of before.

"Yes, do you remember the legend about the Ninja Clan? The Sage of Six Paths separates Yin and Yang and the Five Elements?"

"Six Paths Sage? Isn't that a myth? Could it be that all the ancient legends are true?" Everyone in the ninja world grew up listening to this well-known story. If one day someone said that all of this might be true, the impact would definitely be huge.

Shui Shui chuckled and said, "Xiaoying, any story, legend, or myth is imagined and passed down by people. Even the most absurd myths must have real meaning. If you remove the fog and find the truth hidden in it, you may get unexpected rewards."

"The truth? Could it be that Mr. Mizuki has discovered something?"

"It's not the truth, right?" Some things are too early for Sakura now. "It's just that some things are not really secrets, they just haven't been spread out, such as Yin and Yang Chakra. Generally, those who have achieved something are regarded as secret techniques passed down by the family, and the outside world doesn't know much about it."

After saying so much, Sakura actually had some guesses: "Could it be that the Chakra Scalpel is also a yin-yang attribute ninjutsu?"

"Well, you guessed right, most medical ninjutsu are of Yang attribute, like Nara Shikamaru and Yamanaka Ino family's secret technique is of Yin attribute, and Akimichi Chouji's multiplication technique is also of Yang attribute." Mizuki explained. In fact, Mizuki also knew that these were just ordinary applications of Yin and Yang attribute chakra, and there was still a big gap between them and the Yin and Yang escape inherited from the Six Paths Sage, Indra and Ashura.

"I see." Smart Sakura quickly discovered the pattern. "Could it be that the Yin attribute corresponds to spiritual power, while the Yang attribute corresponds to physical power?"

"Your summary is good, and there is basically no mistake." Mizuki nodded and affirmed: "Yin and Yang are like the two inseparable sides of a thing. Chakra is extracted from the body and spirit, and it itself contains the truth of yin and yang. Except for a very small number of people who are biased, most people have yin and yang attributes. The reason why my chakra scalpel is more powerful than yours is that for some reason, the yin and yang attributes of my body are unbalanced. The yang attribute overwhelms the yin attribute, which greatly enhances the effect of medical ninjutsu." The imperfect curse seal has deeply affected Mizuki until now. Mizuki has love and hate for this gift from Orochimaru. Although it makes him live under the shadow of physical collapse all the time, it also gives him a chance to peek into a higher-level power.

"I see." Mizuki's explanation was simple and straightforward. With Sakura's intelligence, it was not difficult to understand. "Then can I also change the yin and yang attributes like the teacher?"

Hearing what Sakura said, Mizuki hurriedly stopped her and said, "You'd better not do that. The balance of your body is extremely important. With your growing body, rash changes may have a permanent adverse effect on you."

It would be unwise to give up other possibilities just to strengthen medical ninjutsu. If possible, Shuimu wanted to balance his attributes as soon as possible.

Sakura was also disappointed when she heard what Mizuki said.

Seeing this, Mizuki said: "Medical ninjutsu is a very important part of your strength in the future, but to be honest, I can only teach you here. In the future, you should find a better medical ninja system to learn. After all, I am not very good at this aspect."

"I understand, Mizuki-sensei."

"Next, your learning focus will shift to illusions, sealing techniques, barriers, and some practical ninjutsu that I will teach you. First, this..."

As Mizuki spoke, he stretched out his hands, and in front of his palms, as chakra gathered, a faint light curtain appeared.

"This is called a Chakra Shield." In fact, this is based on the ninjutsu of Chiyo, the Sand Ninja. The sealing array written on both arms replaces the function of Chiyo's prosthetic limbs. With the help of outstanding chakra control, it is easy to make a compressed chakra shield.

"For this little technique, the better the chakra control, the stronger the defense of the chakra shield. Especially with your water and earth chakra attributes, you are more suitable for using this ninjutsu than my simple fire attribute."

For this kind of ninjutsu that can instantly improve one's strength, it is most appropriate to learn it before the Chunin Exam.

"However, today's practical class will end here. You must first learn the sealing formation I gave you yesterday before you can proceed to the next step. I have something else to do, so I can't accompany you." Moonlight Gale was still lying in the hospital with his life or death uncertain. Although he could not actually help much, it would be better to do his best if possible.