Black belt (martial arts) of ability when using these tactics and are sometimes referred to as McDojos or belt factories. In some Japanese schools, after obtaining a black belt the student also begins to instruct, and may be referred to as a senpai (senior student) or sensei (teacher). In others, a black belt student should not be called sensei until they are sandan (third degree black belt), or the titles kyosa or sabom in Korean martial arts as second degree or higher, as this denotes a greater degree of experience and a sensei must have this and grasp of what is involved in teaching
History of martial arts there are also attempts to reconstruct other styles, such as Korean swordsmanship and Persian armed combat called "razmafzar". The Japanese term Koryū refers to "old schools" of martial arts which predate 1868; it does not imply that historical styles are actively reconstructed, just that the school's tradition goes back 150 years or more. A reconstructed martial art necessarily rests on historical records, either combat manuals or pictorial representations. Martial arts reconstruction specifically does not claim an unbroken tradition of some historical martial arts. On the contrary, the premise is that in an unbroken tradition, styles significantly evolve over time. It