A door-shaped installation is intended to show our standard of judgment is rather relative. For example, the absolute good, absolute evil, social norms, and legitimacy of behavior, they have relative values. This door is derived from the Buleemoon (Bulee Gate) from Buddhist temple. Like the meaning of Bulee, there is a coexistence of ideal and real and irrationality of the black and white concept. We live on the two opposite edges: cooperation and competition, reveal and hide, and three-dimensional and two-dimensional space.