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
Martial arts of Zhou Tong Pinghua" (扬州评话 – “Yangzhou storytelling”) folktale called "Meeting Zhou Tong by Chance", “Among the itinerant people of the this man was of illustrious fame, a fame reverberating like thunder, an expert in both civilian and military matters. Iron Arm Zhou Tong, Old Master Zhou!” (“Iron Arm” being his martial nickname.) Another source makes the bold assumption that he was "known as the greatest of grand-masters of all times in the history of Chinese martial arts and has many disciples who scattered across the country to teach the martial arts and all the culture involved in its knowledge, such as calligraphy,