Which angle does the complementary angle in geomantic omen refer to?

Courtyard quadrangles lacking houses have a long history and are well-known at home and abroad. This kind of quadrangles surrounded by houses in the east, west, north and south has always been highly respected in the field of geomantic omen, not only because quadrangles attach great importance to geomantic principles in terms of site selection, positioning and building scale, but also because quadrangles are surrounded in all directions.

With the general increase of population and the relative decrease of geographical resources, quadrangles have been successfully replaced by "resource-optimized" commercial houses. However, the geomantic concept of quadrangles "gathering the spirit of all directions" is still applicable to modern homes. Square houses like quadrangles have a stable atmosphere. From the perspective of geomantic omen, residential traffic will be as "stable" as its structure. Even if other aspects do not conform to the principle of geomantic omen, they will not go there as a whole. On the contrary, they are "missing corners".

In modern commercial housing, in order to make the space utilization rate of each unit higher, houses with missing corners account for the majority, and each missing corner will have an unlucky theory in geomantic omen, but you don't have to worry too much, because missing corners can be "filled".