Xingyi quan is one of the major "internal" Chinese martial arts, characterized by aggressive, seemingly linear movements and explosive power. There is no single organizational body governing the teaching of the art, and several variant styles exist. The goal of the xingyi quan exponent is to reach the opponent quickly and drive powerfully through them in a single burst — the analogy with spear fighting is useful here. This is achieved by coordinating one's body as a single unit and the intense focusing of one's "qi".