"The difference is that even if there is an unexpected attack in advance, the advanced version of the stand-in technique can be reversed with the stand-in prop, allowing you to leave the place in a very short time and leave the stand-in, which is really a good ninjutsu to save your life."

"Of course, no matter what kind of stand-in technique, this is a ninjutsu that you will continue to practice all your life, and it is no exaggeration to say that learning the stand-in technique well and being able to use it flexibly can save your life many times, and even become the key to counter-killing the enemy."

After emphasizing the role of the stand-in technique, Sugimoto was afraid that the students in the audience would rely too much on the stand-in technique, and added: "But you should also pay attention to the fact that even if you learn the advanced version of the stand-in technique, you will not be able to use it to avoid enemy attacks at any time. Preferably, you should be able to detect the enemy's attack in advance and avoid it. Using a stand-in to replace oneself with a stand-in is only a last resort......"

"No matter what kind of stand-in technique it is, it can actually be divided into two parts," Sugimoto took out a wooden stake from below, placed it on the podium, patted it and said, "The first is to make the props used in the stand-in technique, and the second is to use the stand-in technique to seal the seal." ”

"Generally speaking, the stand-in is made of wood. After being tempered by your chakra, the wood becomes a stand-in tool. There are also other items in the ninja world that use as stand-in tools, and there are even those that use animals. However, because wood is easy to obtain, it has become the mainstream of stand-in tools. ”

"Beginners need to spend a long time warming the wood to make it a stand-in tool. Skilled ninjas can even create stand-in props with a single tap. For example, if a ninja touches a tree while walking through the forest, he may be making a stand-in artifact. ”

Sugimoto said, turning around and starting to write the key points on the blackboard: "Now the first thing you need to learn is how to use chakra to quench wood, so that it can be used as a stand-in tool, and it can be transformed into your appearance. First of all, you have to attach an appropriate amount of chakra to your palms. ”

After putting a circle on the words "moderate," Sugimoto continued, "If there is too much chakra, the wood will be destroyed." ”

"The second key is to let the chakra penetrate the wood. In this process, the chakra must be kept continuous until enough chakra is injected, and the specific operation is ......"

"After completing the chakra injection, the prop is basically completed. The next step is to seal the chakra, which causes the chakra inside the wood to change, so that the wood becomes your own appearance, and you can move freely, which is the successful use of the double technique. ”

"After the stand-in props are made, they can be left for a while before being used, but as the chakra naturally dissipates, the duration of the stand-in will also decrease. Once the chakra has dissipated, the item will be invalid. ”

"Next, I will explain the seal of the stand-in technique and various precautions......

"Now, you guys line up, take your own wood, and try to inject the chakra ......"

……………………

At the end of the day's lessons, Aoyagi couldn't wait, and just wanted to rush home as soon as possible to study the three ninjutsu and test his ideas.

Walking towards Chisato and Twilight, Aoyagi said, "Twilight, Chisato, I won't practice with you today, there are some things to do." ”

Although the two were a little curious about what Aoyagi was going to do, they didn't ask.

Saying goodbye to the two, Aoyagi went straight home.

As soon as he returned home, Aoyagi found acupuncture points and meridian diagrams and pen and paper from the basement. After everything was ready, he began to perform the clone technique, the stand-in technique, and the shadow clone technique repeatedly, and carefully felt the changes that occurred in his body, recording the chakra changes and operations of each of the three ninjutsu on the drawings.

(Although there are also some descriptions of the changes in the chakra when performing ninjutsu in the ninjutsu scroll, they are not comprehensive, often only mentioning certain parts, and the descriptions are not specific and detailed, so they cannot be used as research materials, and you need to find out the changes in the chakra by yourself)

In the process of documenting the changes in the chakra, Aoyagi encountered no small difficulties. Although the flow path and speed of the chakra are complex, they are still easy to describe, and at most they only need to perform a few more ninjutsu to figure it out in sections.

The trouble was the change in Chakra's own nature, some of which Aoyagi really couldn't think of to describe properly, and then he somewhat understood why Twilight said that Chakra had changed from red to orange in the first place. It's really hard to describe, and I can only barely describe the changes at that time with similar words.

At the same time, it is necessary to ensure that the description is standard, reproducible, and quantified as much as possible to facilitate the subsequent study of the chakra structure. Aoyagi was torn apart by this. In the end, countless brain cells died, and some more suitable descriptions were come up.

(Criteria: Clearly described, in line with the corresponding changes; Moreover, each change corresponds to a description and does not overlap with each other, and the difference is obvious. ）

(Reproducibility: that is, when you see these descriptions, you can correspond to that change)

(Quantify: Be able to accurately describe the extent of a certain change, such as how much the chakra has become active, how much it has become active, etc.)

It was only at night that Aoyagi recorded the changes in the chakra of the three ninjutsu, and after repeated confirmation, he ensured that there was no difference between the specific operation of the record and the actual one.

Placing the three recorded chakra changes and operation diagrams in front of me, a cursory look shows that there are indeed some parts of the three ninjutsu that have a similar structure.

It seems that his own idea is feasible, and this method of comparison allows him to quickly find the desired chakra structure.

In the future, the analysis of ninjutsu can be studied in a modular way, dividing ninjutsu into several different structures, and figuring out the corresponding functions of each structure.

This modularization of chakra changes and operation methods has excellent guiding significance for ninjutsu development, making ninjutsu development easier.

Compare the chakra structure to a single unformed ability or skill, and ninjutsu to a compound skill. Modularization is like building a skill library, when you want to combine compound skills, you only need to pick out various required modules from the skill library, and combine them to form the required compound skills. Mudras and spiritual guidance are the buttons that activate each single ability.

The more modules you have in your skill library, the more compound skills you can combine. At the same time, it will also make it easier to parse other compound skills that are not entered into the skill library.

Because many compound skills have similar modules. As long as there are modules that have been parsed in a compound skill, it at least means that there is no need to repeat the parse, and it also divides the compound skill into two or more different parts, reducing the time it takes to separate the compound skill into usable modules.