With the influx of natural energy into the body, the bodies of the three children of Ninji, Hinata, and Sasuke have all appeared in a variety of toad characteristics, or small bumps have grown on the skin, or webbed-like flesh membranes have grown between the fingers, or the pupils have become the horizontal pupils of toads.

In this regard, the Fukasaku Immortals on the side were not surprised, because this was a process that must be experienced to cultivate the immortal art of 'Miaomu Mountain'.

Cultivating immortal art is actually a circular process of perceiving the natural energy between heaven and earth, absorbing these natural energies, and then fusing these natural energies.

The advantage of cultivating immortal arts in the Three Holy Lands is that cultivators can forcibly perceive natural energy and absorb a certain amount of natural energy through various tricky methods.

The toad oil that the Fukasaku Immortal applied to the arms of the three children was the trick of 'Miaomu Mountain' to cultivate immortal arts.

Once the body is coated with toad oil, no matter who or what the qualification is, they can perceive the natural energy dissipated in the air for a certain period of time, and forcibly absorb a part of the natural energy into the body through toad oil, so as to complete the first two steps of 'perception' and 'absorption' in the three major steps of cultivating immortal arts.

However, the real difficulty in cultivating immortal arts is not the two steps of 'perception' and 'absorption', but the third and final step, 'fusion'.

Only by fusing the natural energy inhaled into the body with one's own chakra and digesting these natural energies can one truly master the immortal arts.

After a while, the characteristics of toads on the three children sitting cross-legged by the toad pond became more and more obvious.

Seeing this scene, Fukasaku Immortal shook his head at Jiraiya.

"Hey!"

Jiraiya sighed.

The characteristics of toads on the body have increased, indicating that the three children have not been able to fuse the natural energy inhaled into the body, so as the natural energy accumulates more and more in the body, the body tends to become more and more inclined to toads.

And the failure of the first attempt, although it does not mean that the three children have no talent for cultivating immortal arts at all, it can at least show that their talent in cultivating immortal arts is far inferior to Naruto.

At this time, Fukasaku Immortal hurriedly wiped the toad oil off the arms of the three children, forcibly interrupting the process of absorbing the natural energy of the three children, and as the toad oil was wiped off, the characteristics of the toads on the three children gradually faded and slowly returned to their normal appearance.

Opening his eyes, Sasuke asked, "What's the matter, why can't you suddenly feel the natural energy?" ”

Ning Ji and Hinata also opened their eyes, and looked at Fukasaku Immortal and Jiraiya with puzzled faces.

The Fukasaku Immortal said with some regret: "You have failed. ”

"Failed?!" Stunned for a moment, Sasuke stood up suddenly: "I haven't even felt much yet, why did I suddenly fail?" ”

Ning Ci was also unwilling, this inexplicable failure was unacceptable to him.

Compared with the excited Sasuke and Ninji, Hinata's mentality was much calmer, but there was still a trace of loss in her eyes, because deep down in her heart, she actually hoped that she could master the immortal arts like Naruto, not that she was thirsty for power, but that she wanted to have a common topic with Naruto.

Obviously, the three children, who were immersed in feeling the energy of nature, were not aware of the changes in their bodies, so they were not aware of the danger coming.

If it weren't for the Fukasaku Immortals watching over them, if they were delayed for another five or six minutes, they might have turned into those toad statues on the edge of the Toad Pond.

Looking at the expressions on the faces of the three children, Zilai also understood their feelings, and said: "You don't have to be too annoyed, the failure of the first attempt does not mean that you have lost the opportunity to master immortal arts forever." In fact, it would be a bit too reluctant for you to try to cultivate immortal arts at this age. ”

Cultivating immortal arts, other conditions are not mentioned for the time being, the most basic point is to have a huge chakra.

If the ninja does not have a huge chakra in his body, then it is completely impossible to talk about fusing and inhaling the natural energy into the body, so a certain amount of chakra is the basic threshold for cultivating immortal arts.

And although Ninji, Hinata, and Sasuke are all Hitomi Blood Ninjas, and they have talents far beyond civilian ninjas, but due to their age, the chakra in their bodies is limited, so when trying to fuse the natural energy they inhale into their bodies, they not only have no advantage compared to adults, but have obvious disadvantages.

Sasuke was unconvinced: "Then why did Naruto succeed?" ”

Jiraiya explained: "Naruto's mother is from the Uzumaki clan, so Naruto also has the blood of the Uzumaki clan, and the Uzumaki clan is known for its huge amount of chakra and amazing vitality, so in terms of cultivating immortal arts, Naruto's kid has an advantage over you." ”

There is another point that has not been said by Zilai, that is, the stronger the ambition, the more detrimental it is to cultivating immortal arts.

To put it bluntly, cultivating immortal arts is to understand nature, a process of using nature, Naruto was ignorant when he was in the 'Dragon Land Cave', he didn't understand immortal arts at all, and he didn't have too strong ambition, he just followed his instinct to feel nature, so it happened to fit the mentality of cultivating immortal arts, and he mastered immortal arts by mistake.

And the three children of Ningji, Hinata, and Sasuke understand the power of immortal arts, and they know even more about the preciousness of the opportunity to enter 'Miaomu Mountain', so the ambition to master immortal arts is too strong, and there are some gains and losses, so they are not suitable for cultivating immortal arts in terms of mentality.

Fukasaku Immortal took over the conversation and said: "The qualifications for cultivating immortal arts are not the same thing as the qualifications of your ninjas, excellent ninjas may not be able to master immortal arts, among the successive generations of Hokage of your Konoha Dynasty, only the first generation has completely mastered immortal arts, the second and third generations have failed to master immortal arts, and the fourth generation has been contacted too late, and it is only a beginner before death." ”

Sasuke said a little unwillingly, "Immortals, can we try again?" ”

The Fukasaku Immortal immediately shook his head: "No, now you have accumulated a lot of natural energy in your body, if you continue to try, the natural energy in your body will erode your body at best, and at worst it will directly get out of control, causing you to become these stone statues on the side." ”

Thinking of wasting the precious opportunity that the teacher had fought for himself, Ning Ci really found it difficult to accept, so he said, "Immortal, I'm willing to take the risk and try again!" ”

At this time, Zilai also stood up: "I promised your teachers and family that I would bring you back safely." ”

Fukasaku Immortal smiled: "It's because I didn't think it through, I shouldn't use the cultivation of immortal arts as a test, so let's do it, you came to Miaomu Mountain to sign a psychic contract, then let's use the psychic contract as a test!" ”

With that, the Fukasaku Immortal summoned a large scroll, and then spread it out in front of the three children, and then pointed to Sasuke who was standing at the very end, and said, "You come first!" ”

The second is even more served!