Classical Eight Mansions doctrine reads the SW octant as one of Kua 8’s four favourable directions, specifically carrying the Tian Yi (天醫) assignment — health, recovery, doctors and medicine.
Configuration
- Mountain: 坤 (Kūn) — SW octant, position 2 of 3, 217.5° – 232.5°
- Mountain type: trigram · yin earth element, yin polarity
- Personal kua: Kua 8 (艮 Gen) — West Life Group, natural direction NE
- Eight Mansions assignment: Tian Yi (天醫) — favourable
- Eight Mansions domain: Health, recovery, doctors and medicine
Kūn (坤) mountain context
Kūn (坤) is the second of three mountains in the SW octant (degrees 217.5° to 232.5° on the compass). It is a trigram-derived mountain, classified as yin earth (yin). Domain: Earth trigram, receptive nourishment, mother register, supportive ground.
坤 is a non-branch mountain (derived from the trigram doctrine) and does not enter the 三合 trine groupings directly.
Kua 8 (Gen) context
Kua 8 (艮 Gen) people belong to the West Life Group (西四命), with natural direction NE (the earth-element trigram register). Kua 8 (Gen) people are West Life Group — born under the Gen trigram (earth, northeast). Thrive in NE / SW / W / NW facing properties; should avoid N / E / SE / S.
Kūn mountain read for Kua 8 Gen
Classical Eight Mansions doctrine reads the SW octant as one of Kua 8’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 坤 mountain (within the SW octant), occupied by a Kua 8 Gen 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 SW for Kua 8 is Tian Yi.
Refinement within the octant: Kūn sits at position 2 of 3 within the SW octant. The SW 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 8 person, a yin mountain like Kūn pairs differently with the kua's earth register than the octant's yang 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.