"Then if it's okay, you can go back first, and stay with me, and I'll send someone to send him back later." Successfully accepted Echizen Kazuya as a disciple, Sarutobi said with a smile.

"Okay, three generations of adults, then I'll go back first, and I'll leave it to you!" Yamanaka Haiichi still couldn't hide his joy, gently rubbed Echizen Kazuya's head, and said in an excited tone, after the three generations nodded in agreement, Haiichi immediately withdrew from the Hokage's office.

"Old, teacher, do I need to do anything now?" After Yamanaka Hai left, Echizen Kazuya was in the silent Hokage's office, facing Sarutobi independently, and suddenly felt a little nervous, and stammered.

"Don't be nervous, Kazuya, don't call me teacher, just call me grandpa in the future," Sarutobi saw Echizen Kazuya's nervousness at a glance, and smiled kindly.

"Yes, Grandpa," the third generation Hokage was extremely amiable, and his kind smile was like a kind and wise elder, making it hard to believe that he was a shinobi standing at the peak of the ninja world, with countless blood on his hands, and Echizen Kazuya immediately stopped nervous under his infection, and shouted crisply.

"Haha, that's right," Hearing Echizen Kazuya's title, Sarutobi Hichicho laughed and said, "Kazuya, you will practice with me in the future, you can ask me any questions at any time, you know?" ”

"Okay, thank you grandpa, I happen to have a few problems that have not been solved, can you teach me?" As soon as he heard Sarutobi say this, Echizen Kazuya hit the snake with the stick, and asked expectantly.

"Okay, then you can talk about it," Sarutobi Hichisaki said with a pleasant face, of course, full of confidence in answering Echizen Kazuya's question.

"That's right, Uncle Haiyi said that there are two disadvantages of the stand-in technique, one is that you need to have an item containing your own chakra as a replacement prop, and the other is that as the distance increases, the consumption of chakra will be very terrifying. I'm also experiencing these two difficulties when using it, so I just want to try to improve this ninjutsu, do you have any good suggestions? Kazuya Echizen asked expectantly.

This question was indeed something he was eager to know, because his proficiency in the "Stand-in Technique" had reached 82%, and it was expected that he would be able to practice it to the full level in another ten days, and then he would be able to upgrade it.

Echizen and Kazuma are also very much looking forward to the third generation being able to give him some guidance so that the upgrade of the stand-in technique will be smoother. In his opinion, the "Stand-in Technique" has great potential, and once its flaws are solved, this spatial ninjutsu that has been abandoned by the upper ninjas will definitely be able to exert its true brilliance.

Sarutobi didn't expect Echizen Kazuya to ask such a big problem as soon as he came up.,Stand-in technique is almost everyone knows basic ninjutsu.,Countless people have studied it.,Tried all kinds of ways to improve it.,But it's like being restricted by the rules.,The results achieved are minimal.。

"Countless people have thought of improving the ninjutsu of the stand-in technique, and have also found some ways to have some effects, such as strengthening the perception ability, strengthening the control of the chakra, etc.," Sarutobi thought for a while, and said: "But the effect is very limited, and it can't fundamentally change this ninjutsu." ”

"Grandpa, why does strengthening perception have the effect of improving the stand-in technique?" Hearing the two methods proposed by Sarutobi Hiza to improve the stand-in technique, Echizen Kazuya immediately asked.

Sarutobi was much more sure of this question, and he gushed out: "This is because at the moment when we use the stand-in technique to swap places between our bodies and other things, our eyes cannot see the location of the item, so we can only know where the item we want to replace is by perceiving the chakra of ourselves contained in the item." ”

"Of course, this method is no problem when the distance is very short, even people with poor perception can clearly know the location of the item, but after the distance is more than two meters, most people's perception of the location will become extremely blurred the moment the ninjutsu is activated, resulting in the failure of the use of the stand-in technique."

After a series of words, Sarutobi breathed a sigh of relief and concluded, "Therefore, if you want to perform a stand-in technique of more than two meters, a strong perception ability is essential. ”

Kazuya Echizen listened carefully to Sarutobi's analysis, and at the same time, combined with his own use of the stand-in technique, he worked hard to think about how to improve it.

When Sarutobi stopped, Echizen Kazuya seemed to think of something, and asked in a trembling tone excitedly: "Grandpa, you said that the eyes can't see the location of the item at the moment of using the stand-in technique, so you need to perceive the chakra to determine the location, so is there any other way to determine the location?" ”

Echizen Kazuya is of course thinking of his own "heart eye", if the "heart eye" can see the situation around the body at the moment when the stand-in technique is launched, does that mean that he can get rid of the first constraint of the stand-in technique, and he will not be limited by the location of the item, within the range of one meter five, he can go wherever he wants?

Just thinking about it, Echizen Kazui felt excited, and he resisted the urge to immediately find a place to test his ideas, waiting for Sarutobi to answer.

"Anything else?" Hearing Echizen Kazuya's words, Sarutobi thought about it seriously, and found that there was nothing to gain, so he said helplessly: "I really don't know this question, I'm not a perception ninja, and I don't know much about perception, but maybe there are other ways to do it!" ”

Sarutobi Hizashi found that Echizen Kazuya was inexplicably excited, and couldn't hide his joy, and asked curiously: "What's the matter, Kazuya, do you have any better way to perceive it?" ”

"Ah, how is that possible? Grandpa, you can't help it, how can I have it? Echizen Kazuya was shocked, lamenting that his qi cultivation kung fu was not at home, and he was overjoyed for a while, and his thoughts were seen. But Echizen Kazu quickly calmed down and replied without changing his face, "I just thought it was very possible, so I was a little excited." ”

The existence of the "heart eye" has always been hidden in the bottom of the heart, and it is better to be his own hole card, regardless of whether it can be used in the stand-in technique, Echizen Kazuya does not intend to reveal it.

"Hehe, even if there are other methods, they don't actually have much effect, and the biggest factor restricting the stand-in technique is the consumption of chakra." Sarutobi Hizashi didn't take Echizen Kazuya's strangeness to heart, and said indifferently.

"Grandpa, is strengthening chakra control just to reduce chakra consumption?" Kazuya Echizen then asked.

"Hehe, Kazuya is so smart, I thought of it all at once!" Sarutobi touched his beard, very satisfied with Echizen Kazuya's reaction, and said kindly.

"Strengthening chakra control is indeed to reduce chakra consumption, but even if chakra control reaches a very good level, the chakra that can be saved is only a drop in the bucket compared to the terrifying consumption of the stand-in technique, and the effect is almost invisible."

Seeing Echizen's eyes, which were also a little puzzled, Sarutobi Hichicho smiled and made an analogy: "For example, a person's original chakra amount can replace an item at a distance of 2 meters, and after strengthening the control of the chakra, he can replace an item at a distance of 2.1 meters, such an increase has almost no effect on the result, now understand?" ”

Echizen Kazuya was silent for a moment when he heard this, he originally thought that he could use his powerful chakra control to reduce the consumption of the double-body chakra in the future, but now that he heard Sarutobi say this, it seems that his idea cannot be realized.