Space and time are presented geometrically and captured geometrically by the senses, which is a prerequisite for the perception of existence. Since Euclid's "Elements of Geometry", geometry has been iterated up to now, and human beings have never stopped searching for basic methods to describe the world. The essence of geometry is a kind of transcendental category methodology and space-time view, which has gone through the transition from paradigm to chaos and is closer to the original appearance of the objective world. This may be a kind of regression, which points to the "original" of the world to some extent.