 So we call these the eight types of Wing Chun energy but this kind of energy again can be used in any kind of martial arts, even jujitsu or boxing or wrestling or jikun dou or karate. It doesn't matter because these energies are universal but we call them Wing Chun energies because they work especially well in Wing Chun techniques. If you really want to master martial arts then you want to learn about these internal energies that are written in ancient texts that were explained by ancient martial arts masters. The secret to martial arts is to balance your internal with your external energy. So a lot of these energies you cannot really see in the video but I'm going to do my best to try to help you to understand what these energies are.