Geng Zi·庚子·Gyeongja
The Geng Zi day pillar — written 庚子 in hanja, read 경자 (Gyeongja) in Korean Saju — is one of the sixty combinations of Heavenly Stem and Earthly Branch that mark a day in the sexagenary cycle. Everything below is read from that pillar’s own structure: its hidden stems, its Ten Gods, and its place in the twelve-stage life cycle.
Personality性
Geng is Yang Metal — the archetype of unshaped ore or a forged blade, a stem normally read as blunt, decisive, and forceful. Placed on Zi, whose branch is pure Water and whose relationship to the stem is 'Metal generates Water,' the Day Master's force does not assert outward as raw hardness; it pours outward as output. Both hidden stems in Zi belong to the output domain: 癸 Yin Water, the primary qi holding 20 of 30 days, expresses as 傷官 Hurting Officer, and 壬 Yang Water, the residual qi holding 10 days, expresses as 食神 Eating God. Zi is one of the branches with no admixture of a third element — its entire content is Water, split between these two stems — so the output channel is not diluted by Wealth, Officer, or Resource material sitting alongside it; whatever energy this Day Master generates goes into expression, full stop. The twelve-stage position confirms the tenor of that expression: Geng sits at 死 Death in its own branch, a stage of stillness and inward withdrawal rather than combative display. Metal cooled and sunk in Water loses its clanging edge; the Hurting Officer's characteristic wit, originality, and impatience with convention come through here as something quieter and more cerebral than the loud, performative Hurting Officer seen elsewhere — sharp-minded, articulate, capable of real bite in speech, but reflective rather than showy, and prone to retreat rather than confrontation when challenged. The Eating God underlayer keeps this from curdling into pure friction, adding warmth, humor, and a capacity for enjoyment that softens the Hurting Officer's edge.
Career職
Every Ten God the branch supplies — Hurting Officer, Eating God — belongs to the output domain, meaning this Day Master earns standing through what it produces: insight, critique, craft, performance, technical skill. Hurting Officer by nature sits uneasily with conventional hierarchy and formal authority, so paths that reward independent judgment over deference — writing, design, engineering, research, consulting, teaching outside rigid curricula — fit better than institutional ladder-climbing. The Death stage reinforces this: it is not an energy built for visible, high-tempo leadership, but for sustained, specialist depth worked at quietly. Notably, no Officer god — 正官 Direct Officer or 七殺 Seven Killings — appears among the hidden stems, so structure and authority are not innate to this chart; they must be supplied externally, which is exactly what the branch's six harmony with Chou (see Pairings) offers by transforming toward Earth, Geng's Resource element.
Wealth財
Neither 正財 Direct Wealth nor 偏財 Indirect Wealth appears among Zi's hidden stems, so wealth is not structurally built into this pillar — it has to be manufactured through the generative sequence running from output to wealth: Metal's Water output generates Wood, which is Geng's wealth element. Practically, this means income arrives as a downstream consequence of expressive or creative production rather than through direct dealing or acquisitive instinct. Earning tends to move in bursts tied to output rather than steady accumulation, and without a wealth god to anchor discipline, saving is not a natural strength. Financial stability, where it appears, tends to come from converting talent into structured, monetizable form rather than from any built-in facility with money itself.
Love & Compatibility緣
The output-dominant temperament brings real vitality to a relationship — quick wit, sharp observation, a willingness to say the true thing rather than the comfortable one, warmed by the Eating God's underlying generosity. What is harder to read from the outside is depth of commitment, because the Death stage keeps this Day Master's expression quieter and more withdrawn than its speech might suggest; intimacy builds through sustained closeness rather than dramatic gesture. Since neither an Officer god nor a Wealth god sits in the branch, the conventional languages of duty or material provision are not this pillar's native tongue — connection is made instead through shared thinking and mutual respect for each other's mind. Partners expecting overt demonstrativeness, or reacting to Hurting Officer's occasional bluntness as rejection of them personally, will find this temperament difficult; partners who read the quiet as depth rather than distance fare better.
Health身
The elemental picture here is narrow and concentrated: a Yang Metal stem generating a Water branch whose hidden stems are entirely Water — no Wood, Fire, or Earth in the mix. In five-element terms Metal governs the lungs and skin, Water the kidneys and the body's deeper reserves. A Metal stem continuously generating Water spends itself outward, which over time can thin its own reserves, showing up as respiratory sensitivity or dryness; the concentrated Water, meanwhile, favors a cool, sinking constitution, with tendencies toward low baseline energy, cold extremities, or sluggish circulation rather than acute illness. The Death stage's inherent stillness compounds this — vitality here is not automatically robust and benefits from deliberate warmth and movement rather than being left to its own resting state.
Best & Worst Pairings合
The strongest matches are 丁丑 Ding Chou, 乙丑 Yi Chou, and 己丑 Ji Chou, all built on Zi's six harmony with Chou, which transforms the shared branch energy toward Earth — precisely the Resource element missing from Zi's own hidden stems. Ding Chou adds 正官 Direct Officer, supplying the lawful structure and legitimate authority this chart otherwise lacks; Yi Chou adds 正財 Direct Wealth, grounding the output-driven earning pattern into steadier income; Ji Chou adds 正印 Direct Resource, offering nurture and legitimizing support. All three partners sit in 墓 Tomb stage themselves, a storage-like stillness that pairs calmly with Geng Zi's own Death-stage quiet — these are low-drama, stabilizing matches built on mutual steadiness rather than excitement. The worst matches are 丙午 Bing Wu, 甲午 Jia Wu, and 戊午 Wu Wu, all arising from Zi's direct clash with Wu, Water's elemental opposite. Bing Wu carries 七殺 Seven Killings, the harshest confrontation with authority and self, scoring worst of the three; Jia Wu carries 偏財 Indirect Wealth, turning the clash into volatility around money and resources; Wu Wu carries 偏印 Indirect Resource, disrupting rather than supplying support. All three sit in 沐浴 Bath stage, a restless, exposed stage that meets Geng Zi's inward stillness with sudden instability — the clash between Water and Fire is mutually damaging rather than complementary, and these pairings tend to flare quickly without settling.