Wing Chun concepts such as simultaneous defence and attack, centreline theory, its use of relaxation, soft techniques against hard and superb efficiency make it an ideal self defence system for women and men, large and small, young and old alike. It does not rely on physical strength or size, or require the gymnastic prowess of Jet Li to work. It is a system that is fun and simple to learn, and its basic and core concepts can be applied to any situation in a relatively short period of time.