The child represents the state of the beginning of yang energy, where all things are dormant and waiting to grow. Ugliness is new, and the yang energy has grown again, but it has not fallen on the top, that is, the vitality has grown again, but it has not yet reached the time to be exposed...... And Hai, the core, the collection of all things, is also a solid core, which means that in the end, the plant bears seeds and gives birth to the next generation.

In addition to the meaning of the development process of things, each earthly branch itself also has a corresponding extended meaning, such as ugly also has the meaning of being tied with a rope.

Since this is the case, Aoyagi remembered the seal of the water array wall, and what exactly do the Yin and Si in it represent? Why can it be combined into the ninjutsu of the water array wall?

Yin can mean that all things begin to grow, and it also has the meaning of moving and leading. Extended meaning can be spreading, shaking development, etc.

It refers to the prosperity of yang energy, all things have been completed, which is reflected in the plant that the branches have initially grown, there are branches and leaves, and in the abstract, it means that the basic form of all things has been completed.

Then in the ninjutsu of the water wall, Yin should control the spread and rise of the water flow, and Si should guide the water flow to form a certain shape (wall), and there may even be a fixed meaning in it, so that the water wall remains unchanged in shape and is tough and difficult to break.

After repeated three processes of directing the flow of water and shaping, a thick wall of water is formed, the wall of the water array.

Well, the three repetitions should be to strengthen the defense of the water array wall.

In this case, if you increase the repetition, will you be able to continue to increase the defense of the water array wall? Or is it the use of multiple water array walls?

And in addition to the meaning of spreading, Yin also has the meaning of shaking. Maybe the strong defense of the water array wall is also due to the fact that the water inside is vibrating repeatedly, breaking up the impact of the objects entering it?

Aoyagi couldn't wait to try his idea immediately, but there was no way to extract chakra in the mental space, let alone release ninjutsu.

He had no choice but to continue to practice and study in the space.

…………

At night, still by the pond in the courtyard, Aoyagi adjusts his state, and he can't be negligent in trying to modify ninjutsu.

Only a small amount of chakra was extracted, so as not to cause serious consequences after getting out of control, Aoyagi quickly sealed, Yin-巳-寅-巳, which is one more Yin-巳 structure than the normal water array wall seal.

As soon as the mudra was knotted, Aoyagi felt that the extracted chakra was consumed sharply, much faster than the normal consumption rate of the water array wall. After all the chakras extracted were consumed, a small wall of water rose on the surface of the water with a loud bang.

Aoyagi took a closer look, although the height and length of this water array wall were much shorter than normal water array walls due to the small number of chakras used, but the thickness was not as serious as the shrinkage, but it was difficult to estimate the specific value.

If it weren't for Aoyagi's training in Araki Shinya, his observation skills had improved significantly, and he would not have been able to tell that the thickness had decreased less than the height and length. Being able to use ninjutsu normally now means that there is a good chance that your inference is correct.

So what about the thickness of a normal amount of chakra?

Aoyagi made the seal again, using a four-repeat version of the water array wall.

Well, the amount of chakra consumed is almost half more, but the thickness has only increased by more than a quarter, a little by a third.

It seems that three repetitions are not unreasonable, and if you continue to increase repetitions, the amount of chakra consumed is not proportional to the increased defense, so it is not cost-effective. And in the face of most conventional attacks, the three-repeat water array wall has been able to defend well, and there is no need to use four-repeat, wasting chakra.

Sometimes, though, the four repetitions can come in handy. For example, if the enemy attacks too violently and can break three repetitions but not four repetitions, using four repetitions is an appropriate choice. It's just that it's not easy to grasp in actual combat, and you need to have strong vision and judgment to seize the opportunity and choose the right ninjutsu to use.

After trying an enhanced version of the Water Array Wall, Aoyagi then tried to see if he could use multiple Water Array Walls.

Six repetitive Yin-Si are formed by the green willows, and at the same time, the spirit guides the formation of two water array walls.

Two walls of water less than half a meter apart rose from the pond.

After observation, Aoyagi determined that the two water array walls were very similar to normal water array walls, and there was basically no difference. And the consumption of chakra is twice that of the normal water array wall, but the appearance of the two water array walls is triggered and controlled at the same time, and the mental energy consumed is a little large, and after using the ninja, Aoyagi feels a little tired.

Well, yes, if the enemy attack is too strong, you can use the double water array wall to block. And the problem of consuming too much mind, with the enhancement of one's spirit, should not be a big problem.

Successfully experimented with two revised versions of the water array wall, and Aoyagi was in a good mood.

Well, according to the plan, the next step should be to strengthen the control of the water array wall, be able to control the location where it appears at will, speed up the rise of the water array wall, etc. Aoyagi has already thought of some moves to use the water array wall pit man, as long as he can improve the ability to control the water array wall, these moves can be used in actual combat.

As for the Earth Flow Wall, which is similar to the Water Array Wall, it is also necessary to practice similarly, so that whether it is on the ground or on the water, Aoyagi will not be unable to perform the expected tactics due to the constraints of the environment.

At the edge of the pond, every few steps are marked with stones, and Aoyagi controls the water array wall to appear near the stone mark. Probably because of the strong spirit and the chakra control ability, after repeated several attempts, Aoyagi was able to control the landing point of the water array wall quite accurately.

Now that you can control the landing point precisely, let's move on to the next stage, where you should be able to capture the moving target.

A few buoys were placed in the pond, and Aoyagi quickly sealed, trying to control the water array wall to appear at the buoy, pushing the buoy out of the water.

The walls of the water appeared in the pond one by one, stirring up the water in the pond to fluctuate violently, and the ripples continued, which also made the buoys float around, adding to the difficulty.

Initially, because the buoy was moved around by the impact of the current, the water wall deviated greatly from the location of the buoy. However, Aoyagi carefully observed the trajectory and speed of the buoy before using the water array wall, and the error was much smaller. Once you've found the right way, the next thing you need to do is keep trying to reduce the error and reduce the time it takes to determine the direction of the buoy.

Just when Aoyagi wanted to continue practicing, he found that the chakra was no longer enough, so he could only wait for his body to recover before continuing to practice.

After a while, under the starry sky, the calm of the pond was broken again, and from time to time a wall of water rose on the water, reflecting the moonlight, and there were some faint waves.