Since the defeat of Obito, Cardo's behavior has been much more restrained, and he has not sent any more men to interfere with the construction of the bridge in Dazna.

However, human patience is limited. As time passed, the progress of the bridge continued to be nearing completion, and Cardo, who did not have a clear understanding of the power of the ninja, couldn't help but move his hands.

Cardo was originally the chairman of a shipping company, and by selling drugs and other prohibited items, Cardo quickly accumulated his first pot of gold.

Then, relying on the first pot of gold, he monopolized the shipping of the country of waves, and exploited the people of the country of waves with all kinds of factories.

The bridge of Dazna can connect the land of waves and the land of fire. In the face of the huge capital outside, there is no room for a new businessman like Cardo to resist.

In this regard, he could not bear to go back to the past, and in order to hinder Dazna's actions, he used many means.

In the end, in this useless joint, with the ruthlessness of the underworld, he personally led people to the location of the bridge.

Then, not surprisingly, Cardo and his party saw the power of the established ninjas, and they were repulsed.

If you say, Naruto in the original book received a happy education. Then they in this book are receiving test-taking education.

What are the characteristics of test-oriented education? It's the kind of cramming way of education.

If it's the original book, Naruto here and them are still practicing the kung fu of stepping on trees. But in this book, Naruto's cultivation progress has reached the point where the nature of refining has changed.

Traditional ninja divides the nature change into three realms.

The first realm is illusion, that is, the imitation of changes in the forces of nature. The second realm is the true form, and the state of studying the forces of nature at a deeper level and constantly synchronizing it is called the true form. The third realm is the final realm, which is called the return to the source.

Kaguyahime doesn't use immortal arts, just because her chakra has reached the level of returning to the source. Chakra is equivalent to the power of nature, and she no longer needs to imitate it to use the power of the properties of elementary particles.

Of course, there is a certain gap between her and the power of love, but that was before. What about now, it will have to wait for Kaguyahime's resurrection, and the author can continue to explain.

All in all, the three realms of traditional ninja are the realm of fake to true. In today's ninja world, no one has pushed the change in Chakra's nature to the realm of returning to the source.

Scientific ninja is different from traditional ninja, which uses vague words and focuses on metaphysics and imagination. The scientific forbearance pays attention to the logic and standards under the scientific system.

Currently, there are six levels of scientific ninja according to the actual situation.

The first level is millimeter-scale, which is the level of change that can be seen by the human eye.

The second level is the micron scale, which is the level of change in the size of the human cell. The reason why Mu Dun was able to create wood was because the caster could use chakra to build wood from a micron scale.

Of course, the wood of Yamato is just wood, but the wood between the Thousand Hands Pillar is a real tree.

Why? Because of the wooden escape between the Thousand Hand Pillars, it has reached the third level, the nano level.

Molecules are large and small, but most of them are in the nanoscale. And life itself is made up of molecules. So, as long as the change in the nature of the chakra reaches this state, it is feasible to create life.

The fourth stage, which surpasses the nanoscale, is called the picometer level. This is the scale of the atom. And only when Chakra's control ability reaches this realm can it be loaded with the change in the nature of the blood collapse.

As mentioned above, the Blood Relay Pass requires the first level of Chakra Control ability, the Blood Relay Limit requires the second level of Chakra Control ability, the Blood Relay Elimination requires the third level of Chakra Control ability, and the Blood Relay Collapse requires the fourth level of Chakra Control ability.

The fifth stage is the Fermi stage, which opens the nucleus and manipulates the changes of protons and neutrons at the first level.

This level can still only support the change of the blood succession collapse, but the strength is not what it used to be. The gap between the fourth and fifth levels is like the gap between Nagato and the Six Dao Immortals in the original book.

The sixth level is called the Ami scale, which is a grade that involves the chakra change of the quark scale. The original Kaguya was at this level, and this level of control was required to run the Blood Relay Snar.

The Ninja Alliance is divided into six levels, but even if it is the Six Shadows, they have only reached the third level. It is extremely difficult for them to reach higher levels.

Moreover, according to the division of the Ninja Alliance, there is another level above the Ami level, a thousandth of the Ami level scale, which is used to measure the accuracy of Uchiha Ai's control.

Of course, the Ninja League, since its appearance until now, has not let love go all out. Therefore, the seventh-level setting cannot be considered a recognized setting.

However, it is only a matter of time before the existence of the Aimi-level becomes a recognized setting.

From ancient times to the present, people's methods of understanding the world have become more and more accurate, and those statements in the past will eventually be replaced by the hierarchy of chakra control accuracy, which is the change of the times.

And now, the three Naruto, who had just graduated from the ninja school not long ago, were sprinting towards the second level with all their might.

In the cultivation of nature change, Naruto cultivates the wind attribute, and he strives to refine the wind attribute chakra into a thin blade with a thickness of a meter (0.1 mm).

As for Sasuke, what he cultivates is the fire attribute, and the change in the nature of the fire attribute is high temperature. Sasuke's goal is to make the chakra particles a little meter long vibrate irregularly and produce a violent high heat.

As for Sakura, her attribute cultivation is the change in the nature of water, and the change in the nature of water is pressure, and she wants to practice the water escape chakra into a water knife with a trace of rice.

The task continued, and after the three of Naruto accepted Obito's cultivation method, they began to take turns on duty with Obito, and they protected the normal construction of Dazna day by day.

Soon, half a month passed, and the three of Naruto relied on hard cultivation to successfully control the chakra accuracy of a few millimeters to half a millimeter, that is, five silk meters.

It's a big improvement, but it's not a big one. The reason why it is said to be big is because in half a month, they were able to reach this level, which is indeed very fast. However, as the naked eye's ability to observe reaches its limits, this progress will become slower and slower. Presumably, the three Naruto who cultivated, they should have a deep understanding.

And it's not big, it's naturally the micron level of control accuracy that doesn't reach the second level.

Naruto's cultivation is to use the shadow clone technique to open a trumpet and maintain a high level of practice. Sasuke's cultivation is a practice in which a person maintains a high level of intensity. Sakura's cultivation is a practice for a person to maintain a low to medium intensity.

Although the amount of practice of the three is different, the progress rate of the three is about the same.