Dear Cecil, Does that implies if I've a auspicious location at a different area as compared to the main door, I can change the facing of the house by putting the house number at that location. (e.g. #7#7 is found facing North, and main door facing SE, by placing the house number at the North, which is the windows of a study room, I can do a flying star analysis base on north as my facing? Dear Anon, This is the general belief amongst some Feng Shui Masters that the door with the house number on it is the main entrance door. Although, some of these Masters did not mention that placing the unit number at another location can change the `main entrance door'. This is implied by them. Here, symbolism is important to Feng Shui: where the unit number `shows' that it is a main door. In my opinion, I would recommend the placement of the unit number for such purpose. Warmest Regards, Cecil