After eating the grilled fish, everyone went to the river to wash up briefly, and Kime Nagaye said: "Although we defeated the enemy in the end, this battle also exposed many of our problems, such as Akai, your chakra control skills really need to be improved. ”

Akai lowered his head and said with some shame: "Yes, if I could also walk on the water, I wouldn't have fought so hard." ”

"Your physical skills are already excellent, so from today onwards, you must put chakra control in the first place in your studies and training, otherwise you will have little power to fight back once you encounter a ninja of the middle ninja and above in the waters, especially the ninjas who can escape from the water."

"Yes."

Mume Nagaye looked at Ebisu again: "Koshou, you can slow down the perception of ninjutsu for the time being, and you have to step up your practice of illusion to enrich your offensive means." ”

Ebisu nodded: "Yes." ”

"In addition, Genma...... After this mission, I think you can try to learn B-rank Fire Escape Ninjutsu, such as "Fire Escape: Fire Dragon Flame Bomb". ”

The level of ninjutsu such as S, A, B, C, etc., is mainly divided according to the difficulty, and for the C-level ninjutsu such as the technique of the fireball and the dragon fire, the current ignorant fire Genma can be proficient in less than half a month.

The spiral pill belongs to the A-level difficulty, and it took him about three years to start in the second grade, half groping and half practicing. If it were now, with detailed instructions, he should be able to master it in half a year.

In this way, it may take him one to three months to master a B-rank ninjutsu.

Of course, the amount of chakra is a big limit, although the amount of chakra in the ignorant fire genma now exceeds that of the vast majority of his peers, but after all, he is only eleven years old, and even if the chakra control ability is very good, he can't practice at a high frequency.

Every time he thought about this, he couldn't help but sigh that it would be nice if he could have a tailed beast.

He didn't dare to ask for ten tails and nine tails or something, it was quite good to come to only two tails and brigades, and it happened to be a fire escape.

Of course, he just thought about it, after all, the two tails should be sealed in the body of the two Yumu people in the land of thunder at this time. Even if it's wild, he doesn't have the strength to catch it now.

Mumu Nagaye explained some more knowledge to the three of them, and when it was night, he said, "We will rest here for one night and continue our mission tomorrow." ”

"From nine to twelve o'clock in the evening, Xiaoshou is in charge of guarding, from twelve to three o'clock in the second half of the night, I am in charge of guarding, and from three to six o'clock Genma is in charge of guarding, understand?"

"Understood."

Nothing was said all night.

Early the next morning, the four of them had another meal of grilled fish and continued their reconnaissance mission.

The survey of the next two sites went very smoothly, and there were no accidents, and it was easily completed in only one day, and the ninth group of four people set out on the return journey the next day.

On the way back to Konoha, in a small town near the border in the Land of Rain, the four of them found a restaurant to eat.

Sitting around a table and eating, the four of them chatted casually.

“…… Teacher Changye, how many countries have you been to? Akai asked.

Kime Nagaye thought for a moment: "The country of wind, the country of earth, the country of birds, the country of rivers, the country of rain, the country of soup, the country of grass...... That's pretty much it. ”

"It seems to be basically in the West?" I don't know what Genma said.

"It's normal, after all, the entanglement between the three kingdoms of fire, wind, and earth is often the origin of war, and both wind and earth are to the west of the land of fire. Therefore, most of the ninjas in Konoha are based in the West. ”

Ebisu asked at this time, "Then, Mr. Changye, which country in the West have you not been to?" ”

Kime Nagaye: "There are only the country of stone and the country of Saki, after all, it is too remote. ”

"I remember that the Land of the Winds is huge?" Akai asked.

Kime Nagaye nodded: "Yes, the country of the wind is 1.76 million square kilometers, which is the largest country in the ninja world, but the country of the wind has many deserts, so although the area is large, the population is very sparse." (Note 1)

Speaking of this, he couldn't help laughing and said: "Speaking of which, for the land area, the five big countries in the ninja world, each has a set of sayings. ”

"For example, the Land of Wind claims to be the largest in area, the Land of Earth is known to be the first in non-desert terrain, the Land of Fire is known to be the first in plain area, the Land of Thunder claims to be one million, but it is actually only more than 900,000 square kilometers, and the Land of Water also claims to be one million, but it is actually the area after counting the waters."

When the three of them heard this, they couldn't help laughing.

I don't know Huo Xuanma immediately asked: "That's right, Teacher Changye." What exactly is it like outside the ninja world, the textbook says that the sky is round, there is nothing outside, and I haven't explained it in detail, I've always been very strange. ”

"Since ancient times, people have believed that the earth is a flat plate suspended in the void, and the sky is round and the earth is round. Although there are also those who believe that the earth is round, this is only a minority opinion, and there is no strong evidence to support it. At present, people only know that in the distance of the Quartet are desolate places with extremely harsh environments, and human beings cannot survive at all, so naturally no one knows what is outside the Quartet. (Note 2)

"A desolate place with an extremely harsh climate?" Ignorant Huo Genma was curious, "Hasn't anyone tried to explore?" ”

"Yes, but they're mostly dead. It is rumored that the second Hokage-sama also went to see it once, but in the end, he returned in vain, saying that there were only endless rifts, volcanoes, and ice fields in the distance of the earth...... It is difficult to move an inch, not a single inch of grass grows, and as for the farther place, even the second generation is unable to explore. Mume Nagaye said slowly.

Hearing this, I didn't know that Huo Genma was suddenly shocked. Where the second Hokage can't go, how bad is the environment? Could it be really vanity?

Could it be that the earth of this world is really a flat plate?

No, all signs such as a lunar eclipse indicate that this should be a planet. But what about the harsh environment in the Quartet? It seems that this kind of environment worse than the polar regions cannot evolve on the planet, and it has evolved so strangely, surrounding the ninja world in all directions.

It is no wonder that even though people have access to electricity, they still have the simple and primitive view that "the sky is round and the place is round".

In the deep-rooted ideological environment of "the sky is round and the place is round", the theory of gravity is naturally difficult to conceive. The lack of gravitational theory is also one of the main reasons for the deformity of the ninja technology tree.

What is the shape of the earth in this world?

Just as he was in deep thought, there was a slight commotion at the door of the hotel......

……

________________

Note 1:

From the Hokage's world map, it can be seen that the country of wind is indeed the largest country, with an area similar to the country of earth, and the specific size of the original book is not said, 1.76 million square kilometers is set in this book.

If you have to find a basis for this setting, it may be the saying that the country of fire will go to the country of wind in three days. If a ninja can run at the speed of Bolt's sprint for more than ten hours a day, then the total land area of the ninja world should be 18 million square kilometers, and a large country can accept 1 million. Faster is bigger, slower is smaller. I think the world of the Hokage should be relatively small, but it's not appropriate to be too small (like the real one), so I made this setting.

However, all the specific data involving space, time, and speed basically have bugs when studied in detail, so you must not use these data to calculate......

Note 2:

The theatrical version 10 of the moon hitting the earth shows that the ninja world is also on the same planet, but considering that there are too many bugs in the TV original and theatrical version, this book rarely references.

The original book (manga) never shows the whole of the ninja world, and there is no direct evidence that the earth is spherical (at most, there is a slight arc on the far boundary when viewed from above), and no one has ever said anything like "the earth is spherical".

The earth and wind on the left side of the world map are obviously not connected to the right, if it was really a simple planetary world, with the great power of ninjas, it should have been explored a long time ago, and this situation should not have happened.

Therefore, the earth in this book is not a normal planetary setting. Of course, it's not a round place. What it is, I'll talk about it later.