Does Yang Mian™ Kung Fu have a grading system, awarding coloured belts?
If you are attacked in the street it will be your fighting skill that will save you not the colour of your belt. In tournaments black belts are frequently defeated by lower grades. Yang Mian™ is interested in defeating an opponent not in giving false feelings of confidence by awarding coloured belts. The real world of self defence is a lot tougher than make-believe fighting within the walls of a training hall according to laid down rules.