Although Uchiha Kyo was eager to integrate the two natures of wind and fire into his physical arts, he also knew that speed was not enough.

Like a plot in a primary school text in the previous life, a crow was thirsty and wanted to drink the water in the water bottle, but there was too little water in the water bottle, the bottle mouth was small, the bottleneck was long, and the crow's mouth could not reach the water anyway.

The crow solved the problem in the simplest way: he picked up the stone from the side, sank the stone into the bottom of the bottle, and as the number of stones increased, the water in the water bottle slowly rose little by little, and finally the crow succeeded in drinking the water.

His current study of wind and fire is like a stone sinking into a water bottle, and as it accumulates, he will one day come to fruition and drink the water in the bottle.

"The information left by the four generations is the information that pushed my ninjutsu attainments to the peak, that is, the first stone that sank into the water bottle, as long as he left it familiar and mastered, it is naturally clear where the bottleneck is stuck in himself, no matter how deep and complex the water bottle is, as the number of stones increases, the water level will always reach where it should be!"

After Uchiha Kyo finished studying the notes of the four generations, he put them aside and continued today's practice, horse steps, medicine training, and resistance to fights, everything went well, only a little problem occurred during the poison practice.

When he was about to inject the anesthetic, the inuzuka veterinarian sold him a needle that he claimed could penetrate rhinoceros skin and small psychic beasts, and when he used a little force, the needle broke directly.

Seeing this, Uchiha Kyo sighed, and simply didn't even soak in the poison bath, and after separating two shadow clones to deal with the basement, he planned to leave, and he now felt that the effect of the poison in the poison bath on him was getting lower and lower, almost to the extent that there was none.

Ordinary poisons have no effect on him, and if he wants to go further, he may only be able to use poisons like Orochimaru and Chiyo to develop poisons from everyone.

Walking out of the basement door, Uchiha Kyo walked directly to another small training room not far away, there was also a shadow clone guarding the door of the training room, this basement was built by him last month, with an area of about 60 square meters.

After all, Izumi has now begun to refine chakra, began to practice, and also has to take a medicinal bath, and the shadow clone will guard at the door during the medicinal bath, although they are brothers and sisters, but there are differences between men and women, and some things should be avoided.

After the shadow clone saw him, he didn't say much, and directly unlocked the ninjutsu and returned to the body.

After getting the memory of the shadow clone, Uchiha Kyo opened the door directly and entered, and now Izumi has finished the medicinal bath and is planning to carry out the next training.

The training room is not large, but it is fully functional, with a training area for heavy objects such as barbells and lead blocks, a throwing training area for shuriken, and a fighting training area for sandbag stake people.

At this time, Izumi was fully dressed and in the combat training area, ready to hit the sandbag.

Seeing this scene, Uchiha Kyo said directly: "You have learned to refine chakra for a month, now, mobilize chakra to your fist and try to hit the sandbag with all your might!" ”

"Okay, brother!" Hearing this, Quanmei walked to a huge sandbag up to two meters high, took a deep breath, and began to condense the chakra, and under the concentration of his spirit, a warm current of the dantian rose, jumped straight into his arm, and began to rise!

"Bang!" Izumi punched the sandbag in front of her with all her strength, and with a bang, hundreds of kilograms of sandbags were raised high, and they flew and fell heavily on the ground.

Chakra is worthy of extraordinary energy, if it were replaced in a previous life, only a human who was a heavyweight boxing champion could cause this effect, but under the energy of chakra, a little girl of five or six years old could do it.

Izumi breathed a sigh of relief, she felt that the power of this punch was very great, and she couldn't help but be a little happy that she lived up to her brother's teaching to her.

But Uchiha Kyo, who saw Izumi's punch, frowned, but he didn't say much, walked directly to her, pointed to another sandbag, and said softly: "Izumi, take root in your footsteps, do it again, this time I told you to fight, you fight again!" ”

Izumi nodded and re-posed, this time her bottom plate was much more stable.

Seeing this, Uchiha Kyo suddenly shot at her back, and his waist was connected a few times, and with his clicking, Izumi only felt that the bones of his whole body were moving slightly, the muscles were stretching, and a force was transmitted from the waist, back to the shoulders and arms.

"Hit!" Uchiha Kyoshi took his hand away and said softly.

Hearing this, Izumi immediately followed the force just now, and naturally swung her fist forward!

The strength of the fist is like fire, the strength is like thunder, Quanmei's whole body at this time is like a full bow, the fist is like a bow and arrow, and the strength of the body and the chakra are all punched out in this punch!

"Bang"

This time, the sandbag did not fly farther than before, but as soon as it was halfway there, the center of the middle fist suddenly exploded, and the outer layer of leather and the sand inside suddenly exploded!

As soon as the sandbag fell to the ground, the sandflow split into two halves and spread out in all directions, and it turned out that the sandbag burst not only in the center, but also under the middle fist!

"This... Did I do it? Izumi was stunned and stammered a little at this time, and then she heard her brother's flat voice coming

"I told you on the first day you refined the chakra! Chakra can make us more powerful and faster, but don't forget the power of our body itself"

Uchiha Kyoshi shook his head, although his chakra was huge, he trusted his body more than chakra.

Izumi's first punch simply attached Chakra to her fist, ignoring her own strength.

Now the strength of Izumi's body is equivalent to that of an adult strong man, even if it is not comparable to a heavyweight boxing champion, and in the case of using chakra, the strength of the punch is actually equivalent to that of a heavyweight boxing champion.

"Huh?"

"If you want to make a powerful punch, you can't just concentrate Chakra in your fist and hit it desperately!"

"Instead, you need to work together on your legs, waist, and shoulders to mobilize every part of your body! Let the power burst out in a concentrated manner, and the power of such a punch will naturally be much stronger than before! This strength is built on the strength of the body's coordination and the result of the chakra fit! ”

Izumi looked at him blankly, and her little head was a little unrefreshed.

Uchiha Kyoshi looked at her somewhat stunned expression, knowing that she didn't understand what he meant, and directly tapped her spine a few times

"Remember that feeling, you were able to throw that punch with my help just now, you need to learn to master it yourself. Remember a trick that starts with the feet, lifts the waist, reaches the shoulders, and is used for punches, and when you master this trick, so that when you use chakra, the punches are more powerful! ”

Uchiha Kyo has now been interning in the dark department for five days now, and he is about to turn regular, an official travel mission, and he won't stay in the village for long, and he doesn't know when he will be able to come back, and he wants to teach his sister a little more!

Izumi looked at the comparison of the two sandbags in the distance, suddenly clenched her small fists, and turned her head to look at her brother

"Brother! I'm going to try my best to master this technique! Izumi said in an extremely firm tone!