Bruce lee defined his techniques not as a style but as a form. 78% of people misunderstand Bruce Lee martial arts as Wing Chun just because he started to learn Wing Chun from Wing Chun kung fu grandmaster Yip Man at the age of 13. Actually Jeet Kune Do is not a style. It may be hard to understand if i am correct. Bruce Lee's fighting style is called Jeet Kune Do. What fighting style did bruce lee use? Why did I say that it because until now when someone asks me what do I teach? Me: I told them I teach Jeet Kune Do. It is a concept.