In the cultivation room, Lin Chuan performed the Hyuga Soft Fist technique over and over again, and the sweat on his forehead was dripping, but he didn't notice it.

Lin Chuan's idea was very simple, he needed to squeeze his potential in the most extreme state, so that he could quickly rise in the genius-filled cultivation realm and gain the ability to protect himself.

Soft boxing is the foundation of the other abilities of the Hyuga clan, and Lin Chuan must lay this foundation firmly, otherwise it will be an extremely difficult challenge for him in the future, whether it is Huitian or Bagua Sixty-four Palms.

After three or four days of adjustment, Lin Chuan finally felt that he had reached the peak in all aspects, so he came to the cultivation room with the spiritual spring and opened it with the Hundred Spirit Order.

The moment the closed stone door opened, an aura like substance rolled out, Lin Chuan didn't have time to think about it, and immediately closed the cultivation room again after dodging into the cultivation room.

The light of the Night Pearl shone on the entire cultivation room, and a spiritual spring slowly flowed in the depths of the cave, Lin Chuan only felt that the pores of his body were completely opened in an instant, and he was greedily sucking the spiritual energy around him.

Lin Chuan could already feel the cultivation in his body, and immediately sat cross-legged on the futon, and the Xuanhuang Jue was running rapidly, frantically absorbing spiritual energy from the outside world into the body, running in the meridians.

With the completion of a week's operation, a pure aura was injected into Lin Chuan's dantian, causing the amount of aura in it to increase at a speed visible to the naked eye, and the whole process was completely natural.

An hour later, the aura around Lin Chuan suddenly reversed, and the aura belonging to the sixth layer of the Qi Refining Period burst out from Lin Chuan's body, full of powerful power.

"Under such a strong aura, my cultivation speed can really be described as a thousand miles a day, the only deficiency is this exercise spirit technique, the level of Xuanhuang Jue is too low, the cultivated spirit qi can no longer meet my needs in terms of quality and quantity, it seems that I have to find a replacement exercise spirit trick as soon as possible before the foundation building period, otherwise it will affect my cultivation foundation!" Lin Chuan said lightly in his heart, and then closed his eyes and breathed to stabilize the cultivation he had just improved.

For the next period of time, Lin Chuan basically spent time in the cultivation room, occasionally returning to the courtyard to eat something when he was hungry, and the rest of the time he almost couldn't soak in the cave mansion, becoming a complete otaku.

However, he didn't spend all his time on aura cultivation, and he never fell behind in the development of ninjutsu, because this was the foundation of his strength.

For now, the ninjutsu that Lin Chuan can use is basically concentrated below the C level, and he can't release the ninjutsu above it.

In the Hokage, the level of ninjutsu represents the difficulty of cultivation, not the strength of the attack, but the more difficult it is to learn ninjutsu, the more powerful it is, which is also recognized.

With Lin Chuan's current strength, being able to perform C-level ninjutsu is already his limit, no matter how powerful ninjutsu is, he must wait for his cultivation to improve and slowly cultivate, this kind of thing can't be achieved overnight.

As for the use of Hao's fireball technique, it was entirely because he watched the second pillar cast too many times when he watched the Hokage, so that this ninjutsu had been deeply engraved in Lin Chuan's mind, so he could perform it without much practice.

In fact, with Lin Chuan's talent, he can use many simple ninjutsu at his fingertips, after all, he is also the ancestor of Chakra now, and the Uchiha Itachi in the Hokage was able to succeed when he first performed the Hao Fireball Technique, and Lin Chuan was naturally not a problem.

It's just that in this world, there are some ninjutsu that seem to be useless, such as the three-body technique, transformation, stand-in and doppelganger, among these three basic ninjutsu, the transformation technique can probably be used to deceive mortals who have not cultivated.

Lin Chuan can't use it at all if he is a stand-in, anyway, this technique is a bug-like existence in the Hokage, and no one has ever used it in the later period, although Lin Chuan is blushing at the escape effect of this technique, but if he can't use it, he can't use it, and he can't help it.

The clone technique is the same, it basically has no effect, Lin Chuan can only see if there is a way to develop the shadow clone technique in the later stage.

"There's one more thing to try, and hopefully it will work!" Lin Chuan slowly opened his eyes and stood up again.

The next moment, Lin Chuan's eyes suddenly condensed, and his hands were quickly sealed in front of his chest, and what he performed was the sealing sequence of the Hao Fireball Technique, Si-Wei-Shen-Hai-Wu-Yin!

However, unlike before, Lin Chuan did not mix the natural energy with his chakra this time, but directly mobilized the aura to perform the Hao Fireball Technique.

Fire Escape: Howe Fireball Technique!

Rumble!

The firelight burst out from Lin Chuan's mouth, and a huge fireball instantly appeared in the cultivation room, the beating flames carried the extreme high temperature, and Lin Chuan's face was flushed, but that smile could not be concealed.

"It worked!" Lin Chuan opened his mouth and said.

He had this idea a long time ago, performing ninjutsu with pure aura. Because the chakra made of the mixture of spiritual energy and physical energy can release ninjutsu, then the pure natural energy mixed with spiritual energy should also be able to release immortal arts.

Lin Chuan had never had the opportunity to test it before, but at this moment, he successfully used his aura to cast the Hao Fireball technique, and Lin Chuan was completely sure of the feasibility of this method.

After all, in this world, the aura is infinite and can be absorbed while fighting, and the staying power is much better than chakra. Although the ninjutsu released by the Immortal Chakra is more powerful, the disadvantage is that Lin Chuan cannot absorb the aura in battle, which leads to his poor combat continuity, which is a big or small problem.

"In the future, I can use the aura to perform ninjutsu, although the power will be about thirty percent lower than the use of the immortal chakra, but I can continue to fight, and it is also very good to be able to hide part of my strength as a hole card!" Lin Chuan muttered to himself.

However, his method of casting spells can only be used by him alone, when he was in the hunting ground, Lin Chuan once taught Qin Lang and the foot trainer the method of sealing, and wanted to test whether it was possible for ninjutsu to be passed on, and soon he found that it was impossible, even if the two learned the method of sealing, they could not cast ninjutsu, because they couldn't refine chakra at all.

And it is impossible to use the method of sealing to guide the aura to cast spells, because for them, Lin Chuan's so-called sealing method has no effect on them, and they can't even guide the flow of the aura.

"Unless I have one day to achieve the immortal position of this world, ninjutsu will only be something that belongs to me, and I can't spread it or pass it on." Lin Chuan said in his heart.

"However, although people in this world can't use chakra, the ability of chakra exists, because I can extract other people's chakra with my reincarnated eye, but it's just that it's difficult for me to do it now."

Lin Chuan shook his head and didn't think much about it, but continued to practice soft boxing.