Day pillars

Wu Yin 戊寅

Yellow Tiger · A great mountain where the tiger lives

Stage · BirthSeated · AuthorityKorean · muin ilju
StructureEarth Day Master × the Tiger (Wood)

Yang Earth — a steady mountain. You are seated on the wood energy that controls you — you live with tension and responsibility beneath you.

Twelve-stageBirth

Newly born energy. It learns fast and grows easily, and it tends to receive care from the people around it without having to ask.

Seated Ten GodAuthority

An officer with a sword sits in the inner room. You carry responsibility heavily and temper yourself with it — tension comes easily, so unwinding is the medicine.

Hidden stems Wu · Companion · 7d Bing · Indirect Resource · 7d Jia · Authority · 16d

The stems concealed inside (Tiger). A branch is not one single energy — it holds this mixture, in these proportions across a 30-day month.

A mountain with a tiger in it — the steady exterior and the competitor inside belong to the same person. Usually still as a mountain, then moving on a scale that surprises everyone.

Is Wu Yin 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.

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Frequently asked

How do I know if I have the Wu Yin day pillar?

Your day pillar is the stem-branch pair governing the day you were born — Wu Yin (戊寅) 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.

What is the Wu Yin day pillar like?

Yellow Tiger — the image traditionally attached to it is "A great mountain where the tiger lives". Your Day Master 戊 (Yang Earth — a steady mountain) sits on 寅, the Tiger, which carries Wood. In the twelve-stage cycle that position reads as Birth, and the seated Ten God is Authority.

Does my day pillar tell me my whole chart?

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.

Why is it called Jia Zi in Chinese and something else in Korean?

Same sixty-cycle, different reading of the same characters. 戊寅 is romanised Wu Yin from Mandarin and muin from Korean, and Korean saju calls the day pillar ilju (일주). The calculation is identical; the interpretive traditions differ.

Other pillars with the same Day Master ()

Other pillars seated on the Tiger ()

See all 60 day pillars ›

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.