White Rat · A white blade rinsed in a winter spring
Yang Metal — a forged sword. You are seated on the energy you produce, so your force flows outward rather than pooling.
Quietly settling. The seat of concentration that digs one well deep.
Talent with a rebellious streak sits in the inner room. Wit and speech shine — and friction with form and authority is the thing to watch.
The stems concealed inside 子 (Rat). A branch is not one single energy — it holds this mixture, in these proportions across a 30-day month.
A blade rinsed in a winter spring — exact, unadorned, coolly clear. Judgement is fast and speech is straight, and that straightness is both the asset and the source of misunderstanding.
Is Geng Zi actually your day pillar?
The day pillar shifts on solar-term and zi-hour boundaries, so it is not countable by eye. Enter your birth date and the engine computes it in under a minute — free, no account.
Find my day pillar — freeYour day pillar is the stem-branch pair governing the day you were born — Geng Zi (庚子) in this case. It rotates every day through a cycle of sixty, and the boundaries depend on solar terms and the 11pm zi-hour rule, so it is not something you can count by eye. Enter your birth date in our free reading and the engine computes it directly.
White Rat — the image traditionally attached to it is "A white blade rinsed in a winter spring". Your Day Master 庚 (Yang Metal — a forged sword) sits on 子, the Rat, which carries Water. In the twelve-stage cycle that position reads as Rest, and the seated Ten God is Expression.
No. The day pillar is two characters out of eight — your core axis, not the whole picture. The year, month and hour pillars, the balance of the five elements, and your decade luck all have to be laid on top before a reading means much. Treat a day-pillar page as the doorway, not the room.
Same sixty-cycle, different reading of the same characters. 庚子 is romanised Geng Zi from Mandarin and gyeongja from Korean, and Korean saju calls the day pillar ilju (일주). The calculation is identical; the interpretive traditions differ.
The twelve-stage position, seated Ten God and hidden stems are computed by the Ioreum deterministic engine (ruleset ioreum-2026.07). The reading itself is interpretation from the day-pillar tradition, not verified science — we always tell you which part is calculation and which part is tradition.