Jia Yin·甲寅·Gapin

Written by DK

The Jia Yin day pillar, 甲寅 in hanja and 갑인 (Gapin) in Korean Saju, is a yang Wood day master on a Wood branch. Of the 24,101 甲 charts this site has measured, 4,015 fall on a 甲寅 day. Those read as strong in 44.4 per cent of cases, weak in 28.1 and balanced in 27.5. Taking every 甲 day together the split is 30.7 per cent strong, 49.5 weak and 19.8 balanced.

The figures come from running this site’s engine over every day of the stem from 1950 to 2009, with a birth in Seoul every two hours from two in the morning to ten at night. Midnight is left out: once Seoul’s clock is corrected for its longitude, a midnight birth falls on the day before, which carries a different stem.

Structure藏干

What the branch 寅 holds, and what each of those stems is to a 甲 day master. The day counts are the classical weights within a thirty-day month, main stem first.

Hidden stem	Qi	Days of 30	Ten God to 甲
甲 Yang Wood	正氣 primary	16 of 30	比肩 Friend
丙 Yang Fire	中氣 middle	7 of 30	食神 Eating God
戊 Yang Earth	餘氣 residual	7 of 30	偏財 Indirect Wealth

In the twelve-stage cycle a 甲 day master on 寅 sits at 臨官 Officialdom.

Personality性

Jia Yin sets a Yang Wood Day Master over a branch that is itself Wood — the Tiger — so the stem stands on ground built from its own element. The branch's primary qi, 甲 Jia Wood at 16 of 30 days, expresses as 比肩 Friend, the Ten God of the self reflected back at itself: this Day Master needs no outside seal of approval, because its strength is entirely self-generated. The twelve-stage placement confirms it — sitting in its own branch, Jia lands at 臨官 Officialdom, the stage of full working competence, past the tender growth of a sprout but short of an over-ripe peak. The result is autonomy: decisive, self-directed, and instinctively resistant to taking orders. Two minor hidden stems round out the picture. 丙 Bing Fire, the middle qi at 7 days, gives 食神 Eating God — an outlet for that vigor through expression, generosity, and visible output. 戊 Wu Earth, a residual 7 days, gives 偏財 Indirect Wealth — an opportunistic instinct for turning effort into gain. No Officer or Resource god appears anywhere in the branch: nothing restrains this Day Master from outside, and nothing nourishes it from outside either. The vigor is entirely home-grown.

Career職

The dominant 比肩 Friend and the 臨官 Officialdom stage both point toward self-direction rather than subordination: this pillar tends to do its best work as a founder, partner, or independent practitioner, in settings that treat it as an equal rather than a subordinate link in a chain of command. The 食神 Eating God (丙 Fire) channels that independence into expressive or productive fields — teaching, writing, craft, performance — where skill becomes visible output. The 偏財 Indirect Wealth (戊 Earth) suits that output to irregular, opportunity-driven income rather than fixed salary, since no Direct Wealth or Officer god anchors the chart to institutional structure. Under conventional hierarchy, the Friend-dominant temperament tends to compete with superiors as though they were rivals, or simply leave to work alone.

Wealth財

Only one wealth god appears, and it is minor: 偏財 Indirect Wealth (戊 Earth), a residual qi of just 7 days. There is no 正財 Direct Wealth in the hidden stems, so the chart carries no built-in instinct toward steady saving or salaried accumulation. What wealth arrives follows the branch's own generation sequence — Fire (食神 Eating God) produces Earth (偏財 Indirect Wealth) — meaning money tends to be a byproduct of visible output rather than a goal pursued directly. This favors bursts of opportunistic earning over disciplined accumulation; the primary qi of the branch, 16 days of 比肩 Friend, is occupied with self-assertion rather than resource management, so financial structure has to be imposed from outside if it comes at all.

Love & Compatibility緣

The Friend-dominant, self-rooted temperament brings loyalty and, through the Eating God's expressive warmth, real generosity — this is not a controlling partner, because it doesn't need to control what it already trusts in itself. What it finds difficult is yielding: with no Officer god present to soften the Day Master toward deference, a partnership tends to be treated as an alliance of equals rather than an arrangement built on give-and-take, and compromise can feel like defeat. Partners who want to lead the relationship tend to find this pillar unyielding; partners who value independence as much in themselves as in the person they love tend to find it unusually easy company.

Best & Worst Pairings合

The strongest matches come through 六合 Six Harmony: 寅 Yin combines with 亥 Hai to gather as Wood, so any pillar with a Hai branch reinforces this Day Master's own root instead of opposing it. 己亥 Ji Hai supplies 正財 Direct Wealth, the steady resource this chart otherwise lacks. 癸亥 Gui Hai supplies 正印 Direct Resource, the quiet nourishment a chart with no Resource god of its own cannot generate. 辛亥 Xin Hai supplies 正官 Direct Officer, the external structure missing entirely from Jia Yin's hidden stems. Each partner hands over exactly what the branch's own qi withholds. The worst matches all carry 沖 Clash against 申 Shen, striking directly at the Tiger branch that is this Day Master's own root and its stage of Officialdom. 庚申 Geng Shen is sharpest: 七殺 Seven Killings meets a branch at the stage of 絕 Extinction, aggressive pressure with nothing to cushion it. 甲申 Jia Shen shares the same 比肩 Friend stem, but the branch clash turns a potential ally into a rival contesting the same ground. 戊申 Wu Shen brings 偏財 Indirect Wealth into the clash, so opportunity arrives destabilized rather than supportive. All three cost this pillar its footing at the root.