Geng Shen (庚申)

出鞘双刃 · Twin Blades, Drawn

Published 2026-09-12

Geng Shen (庚申) is one of the sixty day pillars of Chinese astrology: Yang Metal standing on the Monkey branch, nayin Pomegranate Wood. Its traditional image is Twin Blades, Drawn — Fast, precise, no looking back.

Hidden stems are 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). Emptiness marks the two branches left vacant by this pillar’s ten-day cycle. Conventions: method.

Why is 庚申 “Twin Blades, Drawn”?

Gēng (庚) is yang Metal, and Shēn (申) is the branch whose own core stem is 庚 again. That repetition is the whole picture. Elsewhere in the cycle metal has to borrow its seat from fire or earth or water; here it sits on itself, at the hour autumn takes hold and cutting is what the season is for. Two blades, not one, and both already out of the sheath. Compare the other 庚 pillar on this site: 庚午 puts the same metal on the noon fire, where it has to be burned before it will hold an edge. 庚申 skips the furnace. It arrives sharp, which is a different problem — nothing in the pillar ever asked it to wait. Hence 出鞘双刃, Twin Blades, Drawn.

What is a Geng Shen person like?

Give them a messy problem on a Monday and by Tuesday it is solved, cleanly, and two people are no longer speaking to each other. They will not understand why you want to discuss the second part. The decision was correct — they can walk you through it again, and it will still be correct. What the speed costs is the version of the plan that needed one more week to become obvious to everyone else: they got there first, said so, and the room read the confidence as the matter being closed. Ask them about a choice they reversed later and you often get a long pause, not because they are hiding one but because reversing is not a move they practise. Decided on the spot, never revisited. 庚申 keeps its edge there, and pays there too.

What is inside the pillar?

Three stems sit inside 申: 庚 itself, 壬 (yang Water) and 戊 (yang Earth). Against a 庚 Day Master those read as Companion (比肩), Eating God (食神) and Indirect Resource (偏印) — its own reinforcement, an outlet that pours outward, and a form of support that arrives as insight rather than as nourishment. 庚 on 申 is Coming of Age (临官), the seat where a stem holds office on ground that is already its own. Notice what that combination lacks: there is no Officer stem stored here, no fire to answer to. 庚午 has 丁 for exactly that job. This pillar supplies its own authority, and its emptiness (空亡) falls on 子 and 丑 — water and stored earth, the slow replenishing kind. In the nayin layer, 庚申 pairs with 辛酉 as Pomegranate Wood (石榴木), wood named for fruit that has to be broken open to be eaten.

What does 2026 (丙午) mean for a Geng Shen day pillar?

In 2026, the year pillar is 丙午. Read against 庚 as the Day Master, the year stem is the Seven Killings and the year branch reads as the Direct Officer. The year branch 午 has no clash or harmony with 申. 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).

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. Cast your chart to see this pillar in its full context — free, no account.

Geng Shen 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. Auspice is for reflection, not prediction.