Inside the forest of death in Konoha.

Bang!!

The boulder, which was as tall as a man, was hit hard, and the blasted debris scattered in all directions.

Naruto Uzumaki stood in place, his eyes unwavering, his arms reaching forward at the gravel flying towards him.

Without the need for stamping, the wind attribute chakra flows through the body with ease.

And the colorless wind blade slowly condensed in Naruto's palm, and the piercing whistling of the wind blade could be faintly heard,

"Wind Escape, Wind Blade!"

The words fell, and countless wind blades shot out.

Boom! Boom! Boom!

The fine gravel in front of Naruto was hit with extreme precision by the wind blade, turning into stone slag and slowly falling.

But in the face of this scene, Naruto sensed the chakra he had consumed, but he frowned.

"Although there has been progress, the level of chakra control is still not enough."

A week ago, he couldn't juggle Chakra's output and control, but now he can shatter all the flying stones with precision at once.

Recently, Naruto has begun to carry out more subtle chakra control.

This is necessary training for chakra morphological changes and changes in nature.

"I don't know when I will be able to use the spiral pill of the wind attribute ......"

Naruto stretched out his palm, and he could vaguely see chakra condensed on top of his palm.

With a thought, the chakra on the palm of his hand gradually rotated.

But when Naruto tried to add the wind attribute chakra, the chakra ball suddenly dispersed.

A whirlwind blew around him, cutting tiny wounds on Naruto's body.

In the blink of an eye, it healed so quickly that it didn't even have time for blood to come out.

"Let's continue today's manual work."

Naruto shook his head with a wry smile and sat down on the stone platform beside him.

Picking up the wood on the side, his fingers condensed into a small wind blade, and began to carve.

Behind him, there was already a pile of strangely shaped scraps.

But just when Naruto was going to do it.

"Naruto!!"

A slightly resentful voice came, and Naruto's face was a little more helpless.

Boom!!

Naruto reached out to catch it lightly, and immediately turned his head to meet Sasuke's eyes.

Bang bang bang!!

The two didn't say much, and fought together directly.

However, Sasuke only had the upper hand at the beginning, and in this high-intensity physical battle, his chakra and physical strength quickly bottomed out.

And Naruto's breathing was still steady, and he would catch Sasuke's attack lightly.

Boom!!

"Vomit ......"

Naruto then punched Sasuke in the stomach, causing Sasuke to go limp and get on one knee for a long time retching.

"Sasuke, almost ......"

"I haven't lost yet!"

Naruto was about to end the fight, but Sasuke suddenly got up and attacked him again.

"Alas~"

The corners of Naruto's eyes twitched, and he let out a long sigh.

Then, Sasuke was beaten all day.

It wasn't until the sun went down that the two sat by the fire, one holding a roasted rabbit leg and feasting on it.

"You guy, you actually learned from the shadow splitter?"

Sasuke's originally fair and handsome face has become blue and swollen, and it is very miserable.

But he took a bite of the rabbit leg and asked with a puffed bun face: "You said you were going to train together, but you actually secretly added training!?" ”

Sasuke also wondered why Naruto didn't like to talk at school these days, if something was going on at home.

But he was a little embarrassed to ask, so he thought about secretly following and seeing the situation.

As a result, I saw "Naruto" disappear directly in front of me.

"Damn, the shadow clone can still be used like this!"

Sasuke opened his mouth wide in annoyance and bit the rabbit leg in anger.

Since being defeated by Naruto, in order to surpass him, Sasuke has also been undergoing high-intensity physical training and ninjutsu training.

Although he has been failing, Sasuke has not given up, but has become more and more courageous and has a stronger motivation to practice.

However, he didn't expect that this hateful guy was secretly training!

"What other friends, damn it!"

And Naruto's face of Sasuke's indignation did not change.

The tone was righteous and stern: "I asked you to learn the art of shadow clone before, but you don't learn it, you have to learn the fire escape ninjutsu, can you blame me?" ”

Hearing this, Sasuke's expression suddenly froze.

Naruto, I did talk to him.

But he didn't take it to heart.

Whew!

Sasuke ate with hatred, and could only smash his teeth and swallow in his stomach.

At the same time, he made up his mind that when he went back this time, he would find his brother to learn the art of shadow clones.

"You, what kind of manual work were you doing again?"

After a moment of silence, Sasuke changed the subject and said, "Are those manual jobs really useful for cultivation?" ”

Naruto smiled as he raised his left hand.

Although there was no seal, Sasuke saw Naruto's palm spinning and flowing with a stream of air.

Looks extremely well-behaved and sensible.

"Have you practiced the nature change of the Wind Attribute Chakra to this point?"

Sasuke said with a shocked expression, "Just with those manual jobs? ”

Transforming chakra into wind attribute without sealing is a very high level of chakra's nature change.

Some Konoha shinobi can't reach this level!

"Not just by carving, of course."

Naruto shook his head and said, "The main function of carving is to allow me to cultivate my body while cultivating my character. ”

Nourishment?

"I'm starting to say something inexplicable again."

Sasuke pursed his lips, losing interest in this type of training.

"I've heard that the Uchiha clan is very strong in shuriken manipulation."

Hearing Naruto's praise, Sasuke's head suddenly went up.

But as soon as the conversation changed, Naruto smiled and said, "Why don't you teach me shuriken techniques, and I will teach you chakra attribute changes?" ”

"Okay."

Sasuke didn't think much of it, and just nodded in agreement.

Just now, it was just a physical battle, and neither of them used ninjutsu.

Of course, if he had used it, he would have lost even more.

And within the sealed space.

"Hiccup!"

Nine-tails collapsed in the cage, touched his belly and exclaimed, "If memory serves, this little ghost is only 7 years old now, right?" ”

It has gone from being skinny and fat at the beginning to being a gilled fox now.

During this time, looking at Naruto's progress during this time, he was already numb to Naruto's talent.

Moreover, he also has Mu Dun, Writing Wheel Eye, King Kong Blockade......

Thinking of this, Nine-Tails twitched the corners of his mouth, and his heart was depressed.

Where's this human imp?

Isn't this the big daddy of the tailed beast?

Realizing that there was no possibility of breaking away from the seal, the Nine-Tails suddenly became more comfortable.

"How do you say that?"

Nine-Tails stuck out his nails and picked his teeth, muttering, "Oh yes! When you go to the water and sit and watch the clouds rise? ”

During this time, I always listened to Naruto's little ghost, and he learned a little.

"Nine Lamas, if you want to mess up, just say it, and you have to drag some verses."

The familiar voice that suddenly sounded in the sealing space made Nine-Tails' eyes widen suddenly.

I don't know when, a figure has appeared in the sealed space.

It's still the familiar smile, it's still the familiar shape.

"Facial numbness? Wait a minute! ”

Nine-tails' face couldn't help but be happy, but after sensing the pupil power in Mian Ma's right eye, he was stunned for a moment.

"You, your eyes?"

This is the three-hook jade writing wheel eye?

But how can this pupil force feel so evil?

"Imp, you shouldn't be ......"

Seeing that the nine tails looked like they wanted to speak and stopped, they smiled helplessly.

Immediately, two golden chains slowly stretched out behind him.

Syllable! Syllable!

"Whew!"

Rao is nine-tailed skin is rough and thick, and his ass has also been pumped with skin and flesh, and he can't help screaming in pain.

This familiar feeling, familiar taste......

"Okay, okay, I know it's you!"

Seeing that the Nine Lamas began to beg for mercy, the face was numb and then he withdrew the chains.

"Leave my eyes alone."

Then he asked casually: "How are you doing now that I asked you to learn the principle of nuclear fusion reaction and the principle of fission chain reaction?" ”

How does a nuclear fusion reaction work?

Fission Chain Reaction Principle?

Nine-Tails was stunned, and after reacting, his eyes fluttered, and he said with a little emptiness: "It should be almost, right?" ”

It did teach itself to the notes left by the face of the numbness.

But after so much time, it has long been returned to the face numb.

"Really?"

Mia raised an eyebrow.

Although it was evident that the Nine Lamas' hearts were weak, they did not directly expose it.

Instead, he asked, "What is the difference between an atomic bomb and a hydrogen bomb?" ”

Nine-Tails' eyeballs rolled, and he searched his stomach and said, "Well, the explosion principle of the atomic bomb and the hydrogen bomb is different. ”

"The atomic bomb mainly uses the fission chain reaction principle of heavy atomic nuclei such as uranium-235 or plutonium-239 to explode, while the hydrogen bomb mainly uses the nuclear fusion reaction principle of deuterium and tritium, the isotopes of hydrogen."

It remembers this very well, because it's right on the first page of the note.

Explosives in general are made to burn coal and oil.

The chemical reaction created by the combustion of elements such as hydrogen, oxygen, and carbon then leads to great lethality.

But the nuclei of these elements are unchanged, only the way they are sorted among themselves.

And the atomic bomb does not react by chemical reaction, but by atomic reaction.

What changes is the combination of atoms of the elements, as well as the nucleus.

The explosion after nuclear fission produces shock waves and radioactive elements and other materials, which are countless times more powerful than the explosion of ordinary explosives.

Although the hydrogen bomb is a nuclear weapon like the atomic bomb, it also produces photothermal radiation, shock waves, and other radioactive elements through atomic reactions.

However, there is a difference between the explosion principle of the hydrogen bomb and the atomic bomb, and it is not just the nuclear fission of the atomic bomb.

"The hydrogen bomb is nuclear fission first, and then nuclear fusion, but ......"

Nine-Tails paused, and his face was embarrassed.

Mian Ma didn't care, and added: "But nuclear fusion requires a large introduction, and nuclear fusion can only be completed in an environment of tens of millions of degrees Celsius, and after the atomic bomb explosion, a high-temperature and high-pressure environment will be generated, and the pre-introduction conditions for nuclear fusion will be met at this time." ”

In this way, the nuclei of elements such as deuterium and tritium, isotopes of hydrogen, can be ignited, and a huge amount of energy can be released after a thermonuclear reaction.

"That is, the atomic bomb is the detonator of the hydrogen bomb, and the explosion of the hydrogen bomb is based on the explosion of the atomic bomb."

After stumbling over, the Nine-Tails breathed a sigh of relief.

Then he looked at the face with a smug face.

But the smile on his face remained unchanged, and he asked in a gentle tone, "No?" ”

Emmmm……

Nine-Tails' expression froze suddenly.

Is there anything else?

"Well, don't you want to learn my spiral wheel trick?"

Mian Ma helplessly supported his forehead: "You sit down for me, I will only teach you once." ”