It is a terrazzo floor made of a piece of flat white cow bone and cement, a floor that is paved with invisible “silence” and bare “freedom”. Through the seemingly “non-existent” creative logic and the understanding of empirical psychology, by the way of invisibility, the trait of invisibility is revealed. When the viewers entered the exhibition hall unconsciously, they will activate the reference of this work without even knowing it. When the viewers are at the scene, they will enter into a state of collective unconscious because of the traits of the work itself and their own a priori. And they may not realize that even after they leave. In this way, this work will be truly disappeared in the memory of an individual and become a possible object for aesthetics. This is an ideological form of both “visible” and “invisible”, and it is also a reflection and game of the work itself between “existence” and “retreat”.