Can be in any one of these three sectors, that is why it is sometimes referred to as the "Three Gate Bagwa"
The sum of three sectors in line or on diagonal will equal 15.
The ideal shape for a
building to the ancient Chinese optimizing in Feng Shui, is a square.
Each sector has an energy with its main effect being on a particular part of the life and body of occupants.
The colours associated with each sector are those which enhance the energy of that sector, but are not necessarily meant to be the dominant colours for decorating.
Note that, when evaluating an individual room, or even a study desk or table, the "Front entrance" is placed at the door of the room, or where the person concerned sits at the desk or table.