「サンチンとパッサイの型で内部感覚と律動力を活用する」

"Harnessing Internal Sensations and Rhythmic Forces in Sanchin and Passai Kata"
If you can gather your body into one and have an internal sensation as if your whole body is being wound up at the tip of the sword in the Sanchin kata, your opponent will collapse with just a swing of the wooden sword. However, simply gripping the wooden sword and swinging it down will not make the opponent flinch at all. It won't have any effect on the opponent. However, if the shape-holding of the Sanchin kata generates a unified internal sensation in the body, a rhythmic force different from muscular strength will arise, enabling you to overthrow the opponent. Of course, there are techniques to overthrow the opponent using a wooden sword, but what is being done now is to use the Sanchin kata to gather the body into one state and overthrow the opponent. Rather than techniques, it is using rhythmic force, which is a force different from muscular strength, to overthrow the opponent.
If you can unify the state of the body with the Sanchin kata, simply swinging down the wooden sword will make the opponent collapse. Also, with the Passai kata, by transmitting energy through the body, the opponent can be easily defeated with just a light movement of the stick.
The purpose of kata practice is generally thought to be using the outer form of the kata as techniques. However, kata practice is originally not about that; it's about generating a force different from the usual muscle-based strength through kata practice. Rhythmic force, which is what kata practice aims to develop, has the ability to exert significant influence on the opponent with just slight movements.
Holding a wooden sword, you ask the opponent to hold the tip of the wooden sword, but it's impossible to overthrow the opponent with ordinary muscle strength. Especially when using weapons or tools, it is impossible to overthrow the opponent with muscular strength alone. By altering the body's state through kata practice and allowing the bones of the entire body to work rhythmically towards a single point, the opponent can be overthrown with just a faint force. Kata practice can generate a rhythmic force different from muscular strength.