Classical Eight Mansions doctrine reads the S octant as one of Kua 4’s four favourable directions, specifically carrying the Tian Yi (天醫) assignment — health, recovery, doctors and medicine.
Configuration
- Mountain: 丙 (Bǐng) — S octant, position 1 of 3, 157.5° – 172.5°
- Mountain type: stem · yang fire element, yang polarity
- Personal kua: Kua 4 (巽 Xun) — East Life Group, natural direction SE
- Eight Mansions assignment: Tian Yi (天醫) — favourable
- Eight Mansions domain: Health, recovery, doctors and medicine
Bǐng (丙) mountain context
Bǐng (丙) is the first of three mountains in the S octant (degrees 157.5° to 172.5° on the compass). It is a heavenly-stem mountain, classified as yang fire (yang). Domain: Yang fire of midday, sun, public radiance, peak visibility.
丙 is a non-branch mountain (a heavenly-stem mountain) and does not enter the 三合 trine groupings directly.
Kua 4 (Xun) context
Kua 4 (巽 Xun) people belong to the East Life Group (東四命), with natural direction SE (the wood-element trigram register). Kua 4 (Xun) people are East Life Group — born under the Xun trigram (wood, southeast). Thrive in SE / S / N / E facing properties; should avoid NW / NE / SW / W.
Bǐng mountain read for Kua 4 Xun
Classical Eight Mansions doctrine reads the S octant as one of Kua 4’s four favourable directions, specifically carrying the Tian Yi (天醫) assignment — health, recovery, doctors and medicine.
What this means in practice: a property whose facing direction falls on 丙 mountain (within the S octant), occupied by a Kua 4 Xun person, is read under classical Eight Mansions doctrine as carrying the Tian Yi register — health, recovery, doctors and medicine. The favourable register is one of four favourable octants this kua has; the other three carry Sheng Qi (career), Tian Yi (health), Yan Nian (relationships), and Fu Wei (stability) assignments depending on the kua. The specific assignment for S for Kua 4 is Tian Yi.
Refinement within the octant: Bǐng sits at position 1 of 3 within the S octant. The S octant has three mountains; classical doctrine applies the same Eight Mansions assignment to all three at the octant level, but specific-mountain refinements come from polarity matching (yin mountain vs yang mountain), san he trine groupings, and the mountain’s type (stem vs branch vs trigram). For a Kua 4 person, a yang mountain like Bǐng pairs differently with the kua's wood register than the octant's yin mountains do.
Why this is one input among four
The mountain-kua reading describes Eight Mansions doctrine’s baseline register only. The full audit also requires precise compass-degree facing measurement, the property’s Xuan Kong period chart, and integration across all occupants’ kuas. Master Sean Chan’s feng shui audit integrates all four layers on-site against your specific property.