The Ji Si day pillar pairs the Ji day master (Yin Earth) with the Si branch (Fire, the Snake). Below: the computed facts, what the seat relation and twelve-stage position mean structurally, the nayin gloss, the classical reading of the spouse palace, and an instant lookup for your own pillar.
This page is generated from the engine, not hand-written; structural facts reconcile against the methodology page.
| Day master | 己 Ji · Yin Earth |
|---|---|
| Day branch | 巳 Si (Snake) · Fire |
| Hidden stems | 丙 Bing (Direct Resource, main qi); 庚 Geng (Hurting Officer, middle qi); 戊 Wu (Rival, residual) |
| Stage of the stem here | Prosperity (5 of 12) |
| Nayin | Forest Wood · 大林木 (shared with Wu Chen 戊辰) |
| Seat relation | Branch generates stem (de di) — traditional term: 得地 |
The branch generates the stem: Fire feeds Earth, so the Ji day master is seated on ground that keeps producing it. In traditional wording this is 得地 (dé dì, "gaining ground") — the self is resupplied by its own base. The practical consequence is structural, not predictive: whatever else the chart does, this day master starts from a position where its root is being actively replenished rather than taxed.
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Forest Wood (大林木): wood at forest scale — not a sapling but a canopy. Growth here is collective and architectural; the classical reading favors long horizons.
In the spouse palace this is a Resource (印) configuration: the classical reading treats this branch as a seat that Ji's partner-side Si supplies and protects. The structural point — stated by the tradition, not by this site — is that closeness here tends to feel sustaining rather than demanding. Whether that is true of any actual marriage depends on the whole chart, which is precisely why this page makes no prediction.
The main qi 丙 (Bing, Direct Resource) defines the palace's classical group: Resource. Middle/residual tenants: Geng (Hurting Officer), Wu (Rival).
Birth date alone is enough — the day pillar never needs a birth time. The calculation runs in your browser; nothing is sent anywhere.
The other five pillars sharing this day master (Ji):
Every enumerable component of ba zi has its own page here. Each page is computed by the same engine and can be checked item by item — none of it is a personality table.