If you want to use immortal arts, you must enter the immortal mode, and to enter the immortal mode, you must learn how to refine the immortal chakra, the immortal chakra is formed after absorbing natural energy on the basis of physical energy and spiritual energy, but the three energies must be maintained at one third each, and any deviation can not form immortal chakra, and it may also cause harm to the body.

And the first step in refining the immortal chakra is to perceive the existence of natural energy, when Naruto practiced immortal arts, it was with the help of the toad oil of Miaomu Mountain, but Mu Sen does not need such assistance at all, he has practiced Wufang Quan all year round, and his body has long been accustomed to natural energy, and he can perceive the existence of natural energy at any time.

The first step is not difficult at all, then you can directly start the second step, that is to refine the immortal chakra, it is not difficult for Mu Sen to control the fusion of spiritual energy, physical energy and natural energy, but the difficulty is how to find the balance of the three abilities, which requires a long time of trying and contacting, after all, practice makes perfect!

As for the natural energy backlash that may result from refining the Immortal Chakra, this is not a problem for Mu Sen at all, as long as there is such a situation in the process of refining the Immortal Chakra, he can completely stop refining the Immortal Chakra, and then start to practice the Wufang Fist to absorb all the natural energy of the backlash, so that the problem can be solved.

In order to speed up the learning of how to refine the Immortal Chakra, Mu Sen also decisively used the shadow clone, but the worse thing is that the shadow clone can only be separated from two shadow clones to reach the level of refining the Immortal Chakra, but it can shorten the time for learning and refining the Immortal Chakra by two-thirds, which is also very good.

Returning to the deep mountains where he practiced before, Mu Sen decisively began to practice immortal arts, the deity and the two shadow clones began to refine the immortal chakra at the same time, as soon as the three of them closed their eyes, they could clearly feel the existence of natural energy, with their induction, natural energy began to enter the body, and spiritual energy and physical energy fused together.

But it didn't take long for the two shadow clones to disappear suddenly, and Mu Sen stood up and began to practice the Wufang Fist, obviously the first time to refine the Immortal Chakra ended in failure, but this also made Mu Sen have a little understanding of the Immortal Chakra, and after processing the natural energy in his body, he continued to practice.

Not once, twice, ten, a hundred...

One day, two days, ten days, one hundred days...

Now that the First World War has just ended, it has only been more than two years, and the five major ninja villages are recuperating and recuperating, as for those small ninja villages, they are at most petty fights, and the Yuyin Village, which was more fierce some time ago, has no movement now, and has lost five hundred rain ninjas one after another, which also makes Yuyin Village a little bit injured, after all, even if Hanzo is so ambitious, but the background is still too poor.

In this way, Mu Sen naturally became idle, and the three generations of Hokage did not arrange any more tasks for Mu Sen, after all, the three generations also have a certain understanding of Mu Sen's strength, at least he fought with Mu Sen, and he has never taken advantage of it, such a person with shadow-level strength, let him perform those low-level tasks, it is really a bit overkill.

Mu Sen didn't care about this, he just devoted himself to cultivation, and in less than two days, Mu Sen had already learned to refine the immortal chakra, and the whole person could also enter the immortal mode, and an orange-red immortal face also appeared around his eyes, like Naruto, he was the most perfect immortal mode, and his body did not appear any alienation.

Of course, this is not enough, although he has learned to refine the immortal chakra, but the speed of each refinement is not fast enough, according to the current level, it takes two minutes for Mu Sen to enter the immortal mode every time, but in the battle, who can give Mu Sen two minutes to refine the immortal chakra, this time, it has long been enough for him to die dozens of times.

After learning the immortal mode, this is not enough, Mu Sen also needs to learn how to refine the immortal chakra in the move, so that the difficulty of entering the immortal mode is much higher, although the static refining of the immortal chakra is very simple for Mu Sen, but in the case of moving, refining is not at all, and the difficulty is not a little bit high.

But fortunately, Mu Sen has the time and energy to continuously improve his immortal mode level, except for appearing in Konoha every day and going to Shanyin Village every once in a while, the rest of the time, Mu Sen almost spends time on cultivation, while insisting on practicing martial arts, he also constantly cultivates the immortal mode, and Mu Sen has a very fulfilling life.

Winter goes to spring, summer solstice and autumn goes, in a blink of an eye, a year has passed, and another New Year has arrived, Konoha Village has already become lively, every household is full of lights, and Mu Sen holds two gifts, and slowly walked to a courtyard, the door is written with the word thousand hands, this is Tsunade's home.

Pushing open the door and walking into the house, he saw that Thousand Hands was looking at a book, compared to before, Thousand Hands looked a little old year by year, and beside him, the six-year-old rope tree was practicing with his eyes closed, it should be refining Chakra, civilians generally only learn to refine Chakra after entering the ninja school, but the wealthy family is different, they will start to learn everything about ninja at a very young age, so that they can stand out from the many ninja students.

As soon as Mu Sen came in, Tsunade who had just come downstairs said: "Mu Sen, you are here, come in! Yo, you also brought us gifts, it's really rare!" This is the third time that Mu Sen has spent the New Year at Tsunade's house, after all, Mu Sen is also alone here, and he seems very lonely every New Year, and he will naturally miss his parents in his heart, of course, they are not the cheap parents in the Hokage.

And at this time, as soon as Rope Tree heard that Mu Sen was coming, he immediately stopped cultivating, ran over directly, looked at the gift in Mu Sen's hand, and said with a smile: "Big brother, what good things have you brought me again! Can I open it and take a look?"

When Mu Sen heard this, he couldn't help but smile helplessly, reached out and handed a gift box to the rope tree, and after the rope tree took it, he immediately ran to the side happily to guess, as for the remaining gift box, Mu Sen naturally gave it to Tsunade, and then said with a smile: "Tsunade, this is the New Year's gift I chose for you, and I don't know if you like it or not." ”

When Tsunade heard this, a rare look of shyness flashed on his face, but it was also fleeting, and then he took it with a big grin, and said in his mouth: "Hmph! I have learned to give gifts to please girls, what an improvement! If I am not satisfied with the gifts, you will die." So saying, he happily went upstairs, probably to see the gifts.

For Tsunade, Mu Sen still likes it very much, but the two of them don't explain it now, after all, the two are only sixteen years old now, and Mu Sen is often addicted to practice, and there is not much time to accompany Tsunade, so the relationship between the two can be said to be, friendship is offside, and lovers are not full.

As for Tsunade's parents, they are also quite satisfied with Mu Sen, and often invite him to come to the house as a guest, and now the two are preparing a sumptuous dinner in the kitchen, in this regard, Mu Sen can only smile, walk in front of the thousand hands, and say: "Second generation, how is your body?"

Qianshou put down the book in his hand and said, "What else, it's getting worse day by day, but for me, living one more day is earning one day, by the way, Mu Sen, how is your immortal practice?"

As soon as Mu Sen heard this, he replied: "Immortal art, I have basically completed my cultivation, and now even in the mobile state, I can enter the immortal mode within ten seconds, and the amount of immortal chakra refined is also quite a lot, which is enough for me to release five S-level ninjutsu." ”