I, Yu Uchiha, am devoted to cultivating immortality.

[I can only confirm that it is good food, but it seems that it is inedible. 】

【……A little disappointed. 】

Uchiha Yu racked his brains and filtered the memories in his mind several times, but he still couldn't determine what the bead that Miwa Masayo spit out was.

Fortunately, his intuition determined that it was a good thing, so he felt a little relieved.

It is impossible to be completely reassured, because good things can also kill people.

For example, sugar is definitely a good thing. In disaster years when food production is reduced, and on the front lines where supplies are scarce, it is a life-saving treasure.

But in an era of abundant life, sugar is also a cause of weight gain, diabetes, and even vascular embolism.

Just by consuming too much, sugar turns from a life-saving treasure into a disease-causing nuisance.

But if you add an appropriate amount of sugar to a mixture of saltpeter, sulfur, and charcoal, well... it will be very loud.

In short, no matter how good something is, it depends on the specific usage and dosage. You cannot take it for granted that good things are always good things and are always beneficial and harmless to people.

Uchiha Yuu stared closely at Miwa Masashi and the bead suspended in the air, carefully sensing all changes and being ready to save people at any time.

Almost all of his attention was focused on Zhuzi and Sister Huyu, and the remaining little attention was also used to observe the surrounding environment and prevent enemies from approaching and sneak attacks.

Coupled with Uchiha Yu's lack of mental strength at this time, the pain in his head had not completely disappeared, so that he did not notice the changes in his body.

Uchiha's bloodline is what he calls the Taiyin spirit body, which is essentially based on the combination of Yin escape and mental power, resulting in the Sharingan and related eye techniques.

If the Taiyin spirit body wants to go further, it needs to merge with the Yang escape and life force to achieve a balance of Yin and Yang and breed new power.

According to the knowledge Uchiha Madara obtained from Black Zetsu, the new power is called the power of all things.

But the Taoist theory is not that simple: Wuji gives birth to Tai Chi, Tai Chi gives birth to Liangyi, Liangyi gives birth to Four Symbols, Four Symbols gives birth to Bagua, and Bagua gives birth to all things.

The distinction between yin and yang refers to the two yin and yang. The combination of yin and yang can indeed evolve into the four images and eight trigrams, and ultimately create all things. However, the harmony of yin and yang has more than one evolutionary direction, and it is also possible to condense into one, thus forming Tai Chi.

What is Tai Chi? It is the harmony of yin and yang without separation, the source of life and life, absolute movement and relative stillness, the first step from nothing to something, and infinite possibilities.

On the contrary, the myriad phenomena described by Hei Jue may be one of the myriad things that appear after transcending the Four Symbols and Bagua.

According to the laws of the development of the universe, we should follow the trend and move toward all things. That is the right path for the development of the world.

But why does Taoism do the opposite and say that if you follow the rules, you will become an adult and if you go against the rules, you will become an immortal?

Because human power is limited, even the power of immortals is limited. All things are natural, but they are not something that people can master. At most, they can only choose one from all things, which is great.

If the all-encompassing power Hei Jue said was true, it would not be something that one person could master, but a great power that only one civilization could master.

Perhaps the Otsutsuki clan, from which Otsutsuki Kaguya was born, is such a civilization that possesses great power.

But as an individual, he cannot master everything in the universe, so Uchiha Yu never thought of taking this direction from the beginning. There is no civilization in the ninja world that he can belong to.

He has tried to spread his own civilization. After all, he is already an immortal with unlimited lifespan and has enough patience to cultivate it from generation to generation.

He has tried the Cat Castle Ninja Clan, the Uchiha Clan, the ordinary ninjas of Konoha Village, the shrine maidens of the Demon Country, the ninjas of the Four Great Nations, and the samurai of the Iron Country.

He tried even the most despised civilians.

But all failed.

Including Uchiha Shisui, children who have been educated by Uchiha Yu from their ignorant days quickly mutate into neon spirits as they grow older.

Fortunately, Shisui gave him a good feeling, he was the kind of reasonable and best neon spirit.

Otherwise, Uchiha Yu might be tempted to slap him to death.

Among tens of thousands of people and non-humans, only Miwa Masayo believed in Uchiha Yuu wholeheartedly, and then accepted his three views and identified with that great civilization.

It can only be said that one person is nourished by the soil and water, and his personal efforts cannot change the influence of the general environment.

Thinking about history, the Han people who moved their entire tribe to grasslands and mountains to escape wars also gradually lost their original civilizational attributes after the dramatic changes in their living environment.

Those who entered the grasslands became Di, and those who entered the mountains became Qiang. This is a reality that human power cannot do anything about.

Since the road to civilization is blocked, Uchiha Yu can only give up the reconstruction of the Yanhuang civilization, and therefore has to give up the direction of developing the power of all things, and instead pursue the Tai Chi direction of the unity of yin and yang.

This is the direction that was determined last year and he has made a lot of preparations for it.

If the Uchiha tribe wants to achieve the harmony of yin and yang, they must seek the power of yang escape and integrate it into their own bodies.

Moreover, the power of the fused Yang Escape is very demanding. It must be equal to your own Yin Escape, including the quality and total quantity.

If the fused Yang Release is weak, it will be swallowed up by the Sharingan represented by the Yin Release, slightly enhancing the pupil power.

If the fused Yang Release is too strong, it will in turn suppress the Sharingan and make the Uchiha ninja's physique hot. Not only will their strength weaken, but their temperament will also become irritable and irritable.

The target Uchiha Madara chose was the flesh and blood of Senju Hashirama because he awakened the Eternal Mangekyo Sharingan and reached the extreme in Yin Escape Chakra.

And the flesh and blood of Senju Hashirama who has awakened Wood Release contains the ultimate power of Yang Release Chakra.

At the same time, Madara Uchiha is the host of Indra, and Hashirama Senju is the host of Asura. They both have divinity derived from the Sage of Six Paths.

Uchiha Madara's Yin Release and Senju Hashirama Yang Release are exactly equal, both in terms of quality and scale.

The most important thing is that the flesh and blood of Senju Hashirama has infinite vitality. Even if it is separated from Senju Hashirama's body, as long as it is given sufficient nutrients, it can live forever.

In other words, as long as Uchiha Madara gets a piece of Senju Hashirama's flesh, it is equivalent to getting Hashirama's entire person.

Senju Hashirama is truly the perfect target for Madara Uchiha to fuse with Yang Release, comparable to Tang Monk Flesh.

Later results proved that Uchiha Madara made the right choice.

He successfully fused the flesh and blood of Senju Hashirama. After the yin and yang merged, he gave birth to the power of all things and awakened the Samsara Eye.

Uchiha Yu started thinking about the harmony of yin and yang last year. The first problem to be solved is how to obtain the power of yang escape.

Of course, the first thing he thought of was Senju Hashirama. Although there is no living First Hokage, he has a lot of Hashirama cells in his hands, and the effect is no worse than that of a living person.

But after Uchiha Yuu followed Madara's method, Hashirama's cells were devoured and digested by his body.

Even if he deliberately cultivates a large number of Hashirama cells, even to the extent that they can automatically aggregate into a human face, he still cannot avoid being devoured by his body.

Obviously Uchiha Yuu is stronger than Uchiha Madara, and Senju Hashirama's cells are not qualified to balance him.