Jia Yin (甲寅)

参天巨木 · The Tree That Touches the Sky

Auspice · Published 2026-08-12

Stem

甲 · Yang Wood

Branch

寅 · Tiger

Nayin

Water of the Great Stream

Hidden stems

甲、丙、戊

Emptiness

子丑

Jia Yin (甲寅) is one of the sixty day pillars of Chinese astrology: Yang Wood standing on the Tiger branch, nayin Water of the Great Stream. Its traditional image is The Tree That Touches the Sky — Built like a protagonist.

Hidden stemsare the stems stored inside the branch, each read as a Ten-God relation to the day stem. Self-seat is the stem’s Twelve-Stage position on its own branch (“Stillness” and “Storage” are phases, not verdicts). Emptinessmarks the two branches left vacant by this pillar’s ten-day cycle. Conventions: method.

Why is 甲寅 “The Tree That Touches the Sky”?

Jiǎ (甲) is yang Wood: the trunk, the timber, the growth that only ever goes one direction, which is up. Yín (寅) is the tiger branch, the month spring first genuinely moves — and the principal stem hidden inside 寅 happens to be 甲 itself. So this is wood standing on its own wood, with the root, the sunlight and the soil all seated in the same place. Hence the title: The Tree That Touches the Sky (参天巨木).

What is a Jia Yin person like?

Ask this one for a smaller version of the thing. They will agree in the meeting, and then build it at full height anyway, on their own hours, and it is usually better than what was actually requested. The half nobody puts on a poster is what happens underneath: the people working below them stop offering ideas somewhere around month four. Nobody told them to stop. There was simply no light left at that height.

What is inside the pillar?

The branch 寅 hides three stems: Jiǎ (甲), Bǐng (丙) and Wù (戊). Against a 甲 Day Master these read as Companion (比肩), Eating God (食神) and Indirect Wealth (偏财) — meaning this seat carries its own peer, its own outlet and its own wealth star without borrowing any of them from the rest of the chart. On the twelve stages the pillar sits at Coming of Age (临官), one notch below the peak, and its emptiness (空亡) falls on 子 and 丑. In the nayin layer it pairs with 乙卯 as Water of the Great Stream (大溪水).

What does 2026 (丙午) mean for a Jia Yin day pillar?

In 2026, the year pillar is 丙午. Read against 甲 as the Day Master, the year stem reads as Output and the year branch as Edge. The year branch 午 has no clash or harmony with 寅. These are table facts about one pillar, not a forecast: the same year lands differently on two people who share a day pillar, because the other six characters differ.

Every cell above is derived at build time by the same modules that compute the chart — nothing here is written per year by hand, so it cannot drift out of date while the page stays live. One convention worth knowing: a BaZi year turns at lìchūn (立春, around 4 February), not on 1 January, so a date in late January still belongs to the previous year pillar (our conventions). What the table cannot say is whether a clash or combination in that column helps you or strains you: that depends on how the relation is read and on what your whole chart needs — its useful god (用神).

Is this the whole chart?

No — the day pillar is one of four, and everything above is the picture of one pillar, not a verdict on a person. Whether the furnace in your chart burns hot or barely at all depends on the other six characters and the season you were born in (how we weigh that is public). Read the image, then check it against a real memory: it should argue with you or agree with you. Both are useful. The chart also moves through ten-year luck pillars, and when the first one starts is counted from your birth moment too. The free BaZi calculator shows this pillar in its full context — no account needed.

Jia Yin is one of sixty pictures — the full table is on the day pillar index. The stem on top is your Day Master; the imagery layer is the nayin system. The same Day Master on other seats: Jia Zi, Jia Wu. Auspice is for reflection, not prediction.