What are the characteristics of the three ancient Japanese sword arts

The Nakanishi School originated from the Nakanishi Dojo opened by Ito Ichidosai in Edo. In this school of swordsmanship, bamboo swords are used for normal practice, and the main point of the attack is to "cut down". It is the most orthodox successor to the Nakasai Ichidori-ryu, and truly embodies the true essence of Ichidori-ryu without any dross. In fact, the weapons used in daily practice are a good indicator of whether the school is oriented towards fighting or art. Most of the artistic sword schools use bamboo swords, which are light and flexible, less destructive (of course, the expert's hard-hitting, we still can not afford), and can reduce the risk factor in the practice of the date of the Chinese and Western schools also use bamboo swords to practice. The schools that emphasize fighting use real swords or wooden knives to compare art, wooden knives are heavy, hard, lack of flexibility, a little bit of force, the person in the middle of the hand may be broken, and may even lead to lifelong disability. The reason for this is that it is impossible to win in a real battle if you do not have the awareness to practice on a regular basis. The difference between "Ninbutsu-ryu" and "Ninbutsu" is that, in a strict sense, "Ninbutsu" in Ninbutsu-ryu refers to a taijutsu and a wakizashi, rather than just two swords. In reality, however, this distinction is of little practical significance, so in a broader sense, the two swords and the two swords can be considered to be the same. In the "Rules of Judgment" of the All Japan Kendo Federation, there is an article that reads, "The way to hold a bamboo sword is positively two-sworded when the large sword is held in the right hand and the small sword is held in the left hand, and negatively two-sworded when the large sword is held in the left hand and the small sword is held in the right hand." This is about the difference between the two knives held in the orthodox and inverse two knives. However, before the Second World War, the so-called "two daggers" in the literature were all orthodox two daggers, and when they were used, basically the two daggers were constructed with the large dagger in the right hand and the small dagger in the left hand, and the inverse two daggers seldom appeared in the records. It is written in the explanatory book of swordsmanship at that time: "When the big sword is held in the right hand and the small sword is held in the left hand, it is common to construct the big sword in the upper part and the small sword in the middle part" ("最も実際的な学生剑道の粋" (The Most Practical Student of Kendo - Stylish Kendo), Volume 7 of a series of modern kendo masterpieces, written by Kengo Tominaga and published by Totomunosha in Showa 61), and "The two swords are generally held in the left hand with a small taijutsu and in the right hand with a long taijutsu" (Kendo Explained, Volume XII of the Modern Kendo Masterpieces Series, Kendo Education and Research Society, Dotomonsha Publishing, Showa 61). It was only then that the method of holding the large sword in the left hand and the small sword in the right hand, which is contrary to the usual way of holding the bamboo sword, was gradually developed, and this gave rise to the name of the Reverse Ninbutsu.　In terms of construction methods, since the Futatsudo is a combination of two swords, there are many ways to construct it. There are seventeen ways to structure the sword in "Nijutsu-ryu" (replica edition, Yoshida Seikyo, Sports and Spots Publishing House, Showa 58), and seven ways in "Modern Kendo, Nijutsu-ryu, and the Way of Learning it". Nowadays, the center of kendo is constructed with the upper part of the large sword and the middle part of the small sword, such as the "Upper and Lower Tai-Saber Structures" in "Nijutsu Ryu" and the "Upper Part of the Large Sword Structures" in "Modern Kendo Nijutsu Ryu no Shikibutsu". There are other types of kata, such as the upper kata for both large and small swords, or the cross kata for a group, etc., which are also used in reality.　As for the "foot position" of the Ninbutsu, it has not been standardized, as the Sho Ninbutsu and the Reverse Ninbutsu have the possibility of having the right foot in front or the left foot in front, depending on the actual user. However, in many cases, the front foot is generally structured in the direction of the knife.　The actual method of attacking with the two knives is basically to charge the opponent's bamboo knife with the small knife, and at the same time to strike the face and small hand with the large knife; or to strike the carcass (torso); or to stab suddenly. It may be that when the opponent strikes the face with the knife to resist, at the same time, the big knife carcass (torso) to hit; or when the opponent stabs suddenly with the knife to bet on the attacked place, and with the big knife to strike the face and so on. Therefore, the technique of the two-sword stream is mostly to take the opponent's blow with the small knife and strike the opponent's broken part with the big knife in the gap