Who is the non-mainstream

Non-mainstream refers to things that do not belong to the mainstream, such as cultural subculture, religious heresy, and the other in the crowd. Non-mainstream is a concept that exists relative to mainstream. A thing can change from non-mainstream to mainstream, and it can also change from mainstream to non-mainstream (for example, clothing, language and culture popular in the 1990s developed from the initial non-mainstream to the mainstream); One thing is mainstream in one environment, but it may become non-mainstream in another (for example, the street improvisation of foreign street performers is absolutely staggering in China). Therefore, there is no absolute mainstream and there will be no absolute non-mainstream. Today's non-mainstream has become a distorted culture, and the real non-mainstream is the popular punk.