POPPIN is generally called mechanical dance, but POPPIN does not belong to mechanical dance. It belongs to multi-element all-around dance, which is much more difficult than simple mechanical dance. Moreover, in many international competitions, POPPIN dancers will play music that dancers don't understand at all in order to prove their ability. POPPIN dancers improvise and find a breakthrough, which makes them feel very happy now. Wave belongs to an element in POPPIN, which is very similar to the feeling of current and waves, making people look psychedelic. There are many waves in China, but Yang Wenhao is the best one.