Kendo is a collective project, so you must practice it with others. You must never act arbitrarily and do things according to your own preferences. We should protect our own freedom, but we can't interfere with others' freedom. In other words, don't do to others what you don't want them to do to you. This is a personal and collective relationship. In fact, when practicing kendo, it is not only a question of technology and kendo norms, but also a question of social action norms. When practitioners abide by the rules and practice with partners, they can cultivate social adaptability that is more important than technology. According to the purpose of kendo mentioned above, if you don't work hard to cultivate your personality, learning kendo will lose its meaning. The Dojo standard of kendo enables practitioners to take care of each other and practice kendo together, thus naturally developing a good mentality and self-cultivation in society.