The short version: Eight Mansions (Ba Zhai) reads fixed directions – your personal auspicious orientations. Flying Stars (Xuan Kong) reads how energies in a space change over time. Use both, in that order.
Eight Mansions: The Direction Layer
From your birth year you get a Kua number: eight personal directions, four supportive and four draining. This layer never changes for you – it answers where your bed, desk, and stove should face. Simple, fixed, personal.
Flying Stars: The Time Layer
Your home has a natal chart (from its build year and compass orientation) whose energies shift in 20-year cycles and annual increments. Flying Stars answers when a room is supportive – the wealth corner of 2014 is not the wealth corner of 2026.
The Application Order
1. Form first: no orientation rescues a beam over the bed. 2. Eight Mansions: set bed, desk, and stove directions to your supportive orientations. 3. Flying Stars: fine-tune which rooms to use heavily this year, and where annual cures go.
Why the Order Matters
Most Western confusion comes from applying layer 3 cures while ignoring layers 1 and 2. The layers stack; skipping ahead wastes effort.