Pak ~ Pa da, clogs collide with stone slabs, and ethereal sounds fill the silent courtyard.

Stepping on the last layer of slate, there was a strange sound, some empty echoes, or rather, hollow sounds.

Hey!

Aoyagi leaned down and looked at the slab carefully, groping the edge of the slab with her hands.

Soon groping for the gap, Aoyagi adjusted his posture, and with a hey, he lifted the slate hard.

Aoyagi stepped back, and by the hazy moonlight, she could see a stone staircase under the slate.

Thinking that his parents are ninjas, it is likely that there are ninja things in the dark room underground. Thinking of this, Aoyagi was very excited, but he didn't expect to find it after searching for it before, but today he actually found the dark room by chance.

After thinking about it for a while, Aoyagi decided to wait until he was done exploring before taking a shower, as there might be a lot of dust underneath to avoid getting dirty again. At the same time, he couldn't wait, he wanted to figure out what was going on as soon as possible.

Aoyagi went back to the house first to change into clothes that were easy to move around, and then washed other clothes such as yukata. During this time, the basement should be ventilated for a while to avoid danger due to lack of oxygen.

After washing his clothes, Aoyagi waited a long time before holding the candle and slowly walking down the underground stairs.

He kept an eye on the candle, and if it went out, it would mean that there was not enough oxygen, and he would have to hurry up.

Da-da-da-da, the sound of footsteps echoed in the passage, and in such an atmosphere, Aoyagi's heart was also a little nervous, and he couldn't help but think of things like tomb robbers, zongzi, and ghosts.

After feeling that after two or three minutes of descending, Aoyagi finished the stairs and stood on the flat ground.

I stepped on it, but the ground was still hard stone. Thinking about it, the four walls and the top of the staircase just now were all stone.

It's all stones, not a bit of dirt.

Puzzled, Aoyagi walked around the basement with a candle in his hand, taking a cursory look around.

On the wooden shelf on the right, there are many scrolls, and on the openwork shelf on the left, there are many shurikens and kunai, which shine with a cold glow in the light of candlelight.

There was also a knife hanging from the wall facing the staircase.

Sure enough, it was all ninja stuff, and Aoyagi was very excited, with these materials and materials, the speed at which he became stronger would be much faster.

The candles on both sides were lit, and the whole basement was much brighter.

After a cursory look at a few scrolls, Aoyagi extinguished the candle in the basement and returned to the surface to cover the slate.

After that, it's not early today, so let's take a shower and go to bed early.

The next day, Aoyagi exercised and rested as usual, and after working at a barbecue restaurant in the evening, he hurried home.

Fetching the candle, Aoyagi pried open the stone slab and walked down conveniently.

Lighting the candles in the basement, Aoyagi carefully flipped through the contents of the scroll. Scrolls can be roughly divided into three categories, basic knowledge such as chakra, shuriken, etc.; skills such as ninjutsu, physical arts, illusions (and perhaps seals, secret arts); information on the ninja world, etc.

What Aoyagi lacks most now is the basics, especially the way chakra is extracted. You know, you can't be a ninja without chakra.

Aoyagi singled out several scrolls that recorded chakra-related knowledge, mainly talking about the extraction and control of chakra.

After taking the scroll out of the basement and sealing the entrance, Aoyagi took the scroll back to the bedroom and placed it.

After taking a quick shower, Aoyagi turned on the light and studied the scroll carefully.

There are two kinds of energy in the human body: the physical energy taken from the 130 trillion cells of the human body, and the spiritual energy that has been exercised through a lot of cultivation and experience, and chakra is a strange energy formed after exercising and fusing these two energies. Depending on how it is used, there will be a variety of bizarre effects.

The unit of measurement of chakra is energy, and if there is more energy, it means that the total amount of chakra is large. Energy is roughly related to the total amount of physical and mental energy, but the conversion ratio is not very consistent for each person.

In addition, physical fitness and physical energy are not completely linked, physical fitness becomes stronger, physical energy must increase, but different people have the same physical fitness (strength, speed, endurance, etc.), energy is still different. Roughly understood, it means that some people have more energy in each cell than others.

For example, the Vortex family.

Spiritual energy, on the other hand, is difficult to measure due to nothingness, but generally people who are strong-willed, have experienced many cultivations and experiences, and have accumulated a lot of experience, their spiritual energy will be stronger. However, in the ninja world, there has always been a big disagreement on the evaluation of spiritual energy, however, because of the secrecy of ninja knowledge, there has been no major controversy and discussion. Everyone basically follows their own traditions, and develops their understanding of them through continuous improvement with each generation. And other aspects of ninja knowledge, except for the most basic ones, are basically kept secret by various families.

Some people are born with a strong ability to control chakra, which is likely to be related to their strong mental strength, and it may also be related to the affinity between their spiritual power and physical energy. The speed at which they learn to extract and control chakras is astonishing.

Well, Sakura should be this kind of person with a strong talent for control.

And Xiao Li can't launch ninjutsu because the spiritual energy is not strong enough (limbs are developed and simple-minded?). Is it? But that's not right, after a lot of extremely arduous cultivation, people who are as strong as steel, will their spirits be weak? Xiao Li has a low IQ at most, right? Or does the will not exactly represent the amount of spiritual energy? So, how should spiritual energy be measured?

Aoyagi thought that he could be measured by the size of his spiritual space, so how did others measure their own spiritual energy?

Or maybe it's affinity, or rather, a problem of phase? makes it difficult for Xiao Li to manipulate Chakra to make delicate and complex changes, thus forming ninjutsu?

Feeling that this question would not be answered for a while, Aoyagi put it behind him and continued reading:

However, most people are gifted, but as long as you practice in the right way, you will be able to master the method of extracting chakra quickly and control it.

When you are not skilled at first, it is best to sit cross-legged on the ground, with the assistance of gestures, and slowly experience the energy inside the body in the ethereal realm, and use your mind to control the mental energy and physical energy, stir it evenly and mix, which is chakra.

Such an expression is rather abstract and inevitably difficult to understand. With the efforts of many ancestors, more detailed and specific operation methods and various small skills have been developed, which is good news for people who are not talented enough.