How to distinguish the west wing of an old house in the countryside?

The building facing south is the main room, where the owner or a powerful person lives. The east side (sunrise direction) is the east wing, the west side (sunset direction) is the west wing and the south side is the south wing.

A servant living in the east or west wing or a person of lower status in the family.

Nanfang is the temporary residence of warehouse or visitors or the residence of servants.

Now the status difference is confusing. For example, some families should be the first room where parents live, but the daughter-in-law lives. The wing where their daughter-in-law should live was occupied by her in-laws, and her status was reversed. ?

Attachment: Schematic diagram of Beijing quadrangle