There is some dispute about whether "underground" and "avant-garde" truly mean the same thing and if challenging non-traditional cinema and fine arts cinema are actually fundamentally related.
有一些观点存在争议，比如“地下”和“前卫”实际上是不是同一件事，具有挑战性的非传统电影和精美的艺术电影实际上是不是根本相关的。