"Breathe like a fetus? Is it the navel?" Hanzo, as a medical ninja, of course knew the common sense that the fetus gets oxygen through the navel, and he looked at Rope Tree's belly with some curiosity.

Rope shook his head and explained, "No, no, no! It's just a metaphor! In fact, fetal breath is a way of internal breathing through the meridians and acupoints in the body, and when the cultivation of chakra reaches a certain level, it can naturally be done. By this time, external breathing has completely stopped. Naturally, toxins in the air can't get into my body! ”

After reaching the realm of practicing qi and transforming gods, Rope Tree found that he could perform fetal breathing. Even when he is exercising vigorously, the chakra in his body can provide sufficient oxygen to all organs in his body through the meridians, so that he can maintain a fetal breath state all the time.

In the state of fetal breath, Chakra will not be consumed, but will speed up recovery, and the consumption of physical strength will also be reduced, and today he happened to use fetal breath to resist Hanzo's poisonous mist.

"Do you use the meridians and acupuncture points for internal breathing? No wonder you didn't breathe after such a fierce battle just now! Hanzo looked at the rope tree, and his expression became more gloomy, "This breathing method is very similar to turtles and insects, the former can breathe with **, and the latter uses the stomata in the abdomen to breathe.

Even if it's called internal breathing, the gas exchange between you and the outside world must not stop. Because chakra and oxygen are completely different and cannot be replaced with each other!

Therefore, I concluded that the so-called internal breathing is a new oxygen supply system that replaces the functions of the heart, lungs, and blood vessels with meridians, and that the gas exchange is no longer the mouth and nose, but the acupuncture points of the whole body, and the chakra replaces the blood to transport oxygen.

The meridian system of the human body is connected to the blood vessels and nerves, and there are countless acupuncture points, so the efficiency of this internal respiratory system far exceeds that of the cardiopulmonary system, so you can get enough oxygen for the cells in the body without making any strenuous exercise. In order to maintain physical strength to the greatest extent, and your chakra only plays a role of transportation, so not only will it not be exchanged but will increase due to the operation in the meridians, which is equivalent to refining at any time.

Since the acupuncture points are located under the skin, there is a natural filter when breathing.

Human skin can breathe, but the amount of breathing is very small, and the amount of oxygen absorbed by the skin is only 1/160 of the lungs, which is not enough to supply the normal metabolism of the human body, so ordinary people cannot live in water. The skin mainly absorbs external substances through three pathways, namely the stratum corneum, the sebaceous gland of the hair follicle and the mouth of the sweat duct, of which the stratum corneum is the most important way for the skin to absorb gas. The physical properties of the stratum corneum are quite stable, it forms a complete semi-permeable membrane on the surface of the skin, and under certain conditions, the gas enters the cell through the cell membrane in the form of binding with water molecules.

Both live and dead keratinocytes are semi-permeable, and it follows Fick's law, which states that at low concentrations, the permeability of a substance per unit time and unit area is proportional to its concentration. And under the effect of chakra, the concentration of air under your stratum corneum is always close to zero, so the efficiency of absorbing oxygen is far hundreds or thousands of times higher than that of ordinary people.

And the sansho fish toxin in the air cannot enter your body because of the barrier of the stratum corneum.

If my guess is correct, you should be able to breathe in smoke or even water, because the stratum corneum in your skin filters out solid particles and liquids for you, which absorbs oxygen. But if you're in a completely oxygen-free environment for a long time, such as boiling water, vacuum, solid ground, you still won't survive. Just like the fetus in the amniotic fluid, if it loses the oxygen supply to the umbilical cord, it will suffocate to death. ”

When Rope Tree heard that Hanzo had used his biological and medical knowledge to analyze the fetal breath realm in Xiuzhen so thoroughly with the small amount of information he had revealed in such a short period of time, he was really shocked.

It's really not a fluke to be able to transplant the Sansho fish poison sac into the body at a young age, and this ninja demigod has a good interpretation of what knowledge is power for everyone!

Rope Tree resisted the urge to applaud, and said with a smile on his face: "Your Excellency Hanzo is indeed worthy of being one of the top medical ninjas in the ninja world, and your analysis of fetal breath is completely correct, but unfortunately it has no effect.

So how are you going to resist my Flying Thor Infernal after the toxin wears off? If you continue like this, you will be dragged down sooner or later! ”

The psychological confrontation in the battle with Hanzo is also very important, as a pseudo-scientist who often exchanges experiences with Uncle Snake, how could Rope Tree be bluffed by the other party, his implication is: No matter how accurate and thorough your analysis is, you can't do anything about me, it's useless.

Hearing this, Hanzo said with a sneer: "What do you think I told you so much simple and boring knowledge for? Your Flying Thor Infernal isn't perfect, either! ”

"Ninja Psychic Technique!" I saw Hanzo suddenly complete the seal with both hands quickly.

As the white smoke cleared, a giant green sansho fish that looked like a baby fish appeared out of thin air, and Hanzo stood on top of the sansho fish's head.

Rope tree looked up at Hanzo diagonally above, he had already guessed the other party's plan: "Psychic beast Sansho fish?" Is this the hole card you used to crack Flying Thor?"

Hanzo smiled confidently, "Although your ninjutsu can block most of the opponent's surrounding directions, it can't block the ground!" And my psychic beast, Sanjiao Fish, happens to have the ability to escape from the ground in addition to toxins, and the kunai array with its help can't lock me at all. And I naturally don't have any consumption! ”

Rope Tree also had to nod and admit: "Yes, this is indeed the best way to restrain the Flying Thunder God." But in this state, you can no longer use swordsmanship to fight me in close combat, so how can you break through my defenses?"

The smile on Hanzo's face became even more obvious: "If I'm not mistaken, you can't use ninjutsu with other attributes while using the Thunder Escape Chakra mode, right?" So you've always been used to using the Thunder Escape Knife Technique to fight with ninjutsu such as the Six Styles. Even the space-time ninjutsu just now can't be used at the same time as the Thunder Escape Chakra mode! ”

Rope tree said a little helplessly: "It's still seen by you!" The attributes of Lei Dun are very domineering, and when I use the Thunder Chakra mode, my whole body is full of Thunder Chakra, and it is difficult to condense Chakra of other attributes in the meridians.

If I forcibly use ninjutsu with other attributes through the subtle manipulation of chakra, there will be a temporary breach in the defense. For example, when I open my mouth and use other attributes, the meridians of my head and neck will be unguarded. And some high-level ninjutsu even require the cooperation of the meridians of the whole body. Of course, it doesn't matter if it's an ordinary ninja, but it's deadly in front of a master like you. ”