For Kua 4 people, the best direction in bedroom is north, south, east and southeast. So its actually the head placed at either of these directions, or FACING one of these directions(leg pointed to one of these directions)?
And lets' say if my bed is FACING between north and northeast, am I cultivating the Sheng Chi or Total Loss?
You must understand the different between sector or location and facing. Sector or location is based on the house sitting position, so for example if your house is sitting on SE then N, S, E and SE is your 4 best sector or location. That say your bedroom is located in the North sector which is the Sheng Chi of your house, now what you need to do is to place your bed headboard pointing to your 4 best direction according to you Kua number. In this way you are using the best sector of the house and place your bed toward you best facing direction.