A series of books about martial arts, about martial artists about those who practice these martial arts and managed to reach a certain level. About those who practice special complexes of techniques and techniques for self-defense. Over the many thousand-year history of human development, methods and methods to harm others have been systematized and formed into a wide variety of types, subspecies and varieties of martial arts. It is very difficult to figure them out. For example, in China alone, there are more than 1000 different schools, styles and directions.