Door

DOOR . The female symbol,

which also contains the entire range of meanings of the symbolic hole , since it is the door that will give access to the opening ; its meaning, then, is that it is the opposite of the wall. There is the same relationship between the door of the temple and the altar as between the periphery and the center: and although in each case the two-component elements are furthest apart, they are in a certain sense the closest, since they are the closest. one defines and reflects the other. This is well illustrated in the architectural decoration of the cathedrals, where the façade is almost executed in accordance with the altarpiece.

Credit - Genshin empact