The Geng Xu day pillar (庚戌 gēng xū) sets Yang Metal over the Dog, an Earth branch. Gēng (庚 Yang Metal) is unrefined metal — the axe, the ore, the load-bearing blade. Xū (戌 the Dog) is dry autumn earth that both backs the metal and hides a banked fire within it. Earth produces Metal, so the ground supports the blade; but the Dog also stores heat that can temper it. The image is a heavy tool resting in a dry forge: solid, backed, and quietly capable of being sharpened.
Because the day pillar is your own seat in the chart, Geng Xu describes someone who meets the world with weight and resolve, carrying more strategy under the surface than the blunt exterior suggests.
Personality
Gēng is the most direct of the ten stems — decisive, justice-minded, comfortable with hard truths and heavy responsibility. On the Dog, that directness gains a thinking layer. The branch’s main energy reads as Indirect Resource (偏印 piānyìn) to the Day Master, the star of unconventional knowledge, self-teaching and independent, strategic thought.
So the axe here is also a planner. Geng Xu people tend to be tough and self-reliant, but their strength is backed by an unorthodox mind — they gather knowledge their own way and trust their own read of a situation over received opinion. That can make them formidable and a little guarded. The Dog additionally stores a Rob Wealth companion and a hidden Direct Officer, which loads this pillar with both competitive drive and a real sense of duty: the banked fire that gives the metal its discipline. Read Geng Xu as principled force with a strategist behind it, not raw bluntness alone.
The spouse palace
In Ba Zi (八字 bāzì) the day branch is the spouse palace, the seat of the partner. The Dog holds three hidden stems, so this seat combines support, rivalry and authority in one place.
| Hidden stem | Ten God (relative to Gēng) |
|---|---|
| Wù 戊 (Yang Earth) | Indirect Resource (偏印 piānyìn) |
| Xīn 辛 (Yin Metal) | Rob Wealth (劫财 jiécái) |
| Dīng 丁 (Yin Fire) | Direct Officer (正官 zhèngguān) |
For a Gēng woman, the Direct Officer is the husband star, and finding it in the spouse palace classically points to a responsible, principled partner seated exactly where partnership belongs. The Indirect Resource leading the seat adds a supportive, if slightly reserved, backing to the relationship. The note to handle honestly is the Rob Wealth alongside: it asks that shared money and shared attention be kept clearly delineated, so companionship does not tip into competition. Read the whole seat calmly — this is a marriage with a dutiful partner and a resourceful base, strongest when its practical boundaries are plain.
Because the Dog is a storehouse, all three of these currents run below the surface; the marriage tends to be deeper and more layered than its composed exterior shows. How to read a vaulted palace against the visible spouse star is covered in our spouse palace guide.
When the Dog is opened
Xū is clashed by Chén 辰 (the Dragon) in the Six Clashes (六冲 liùchōng), and a clash between two storehouses breaks both open: Dragon years tend to surface this seat’s banked matters — old plans, old feelings, unspoken accounts — and ask that they be dealt with in daylight. Xū also combines with Mǎo 卯 (the Rabbit) toward Fire in the Six Combinations (六合 liùhé), and joins Yín 寅 and Wǔ 午 in the Fire frame (三合 sānhé). Both movements fan the hidden Officer into open flame — more heat on the metal, more structure in the life. For a strong Geng Xu these are tempering years; for a thin one they are heavy, and the difference is a strength call.
Na Yin
The melodic element (纳音 nàyīn) of Geng Xu is 钗钏金 Chāichuàn Jīn, Hairpin Metal — the fine wrought metal of ornaments and jewellery. It is a graceful counter-image to the heavy axe above: the same element, but shaped into something small and precise rather than blunt. Take it as a hint that this pillar’s force can be refined into elegance. It flavours the reading; the Earth-producing-Metal mechanics still do the work.
In a full chart
A single pillar is only a sketch. Read alone, Geng Xu looks strong and well-backed, but the surrounding chart decides whether that resource support is a help or a smothering, and whether the hidden Fire tempers the metal or barely reaches it. Strength settles all of this, so begin with a strong versus weak reading, then study the stem in the Geng Metal Day Master profile and its complete relationship map on the ten gods of the Geng Metal Day Master page. The neighbouring Xin Hai day pillar shares this Hairpin Metal melody on the softer Yin Metal, a useful contrast in how the same ornament-metal reads across the two Metals.
Two Gēng siblings sharpen the picture further: the Geng Chen day pillar sits on the wet Dragon that clashes this dry Dog — the same Indirect Resource seat with Water banked instead of Fire — and the Geng Wu day pillar stands directly in the refining Fire that Geng Xu keeps stored.
Finding Geng Xu in your chart
The day pillar is fixed by your date of birth, repeating every sixty days across all seasons and years. Cast your four pillars and check the day column for 庚 over 戌. If the grid is new, the reading-order guide shows which column holds the day pillar and what to weigh around it.
Common questions
Is Geng Xu strong?
Well-supported — Earth feeds Metal — with tempering Fire in reserve. The month of birth still decides the verdict: an autumn Geng Xu may be over-heavy, a summer one glad of the backing.
What does this palace mean for women?
The husband star sits inside the marriage seat, a classically favourable placement suggesting a principled, responsible partner. The hidden Rob Wealth simply counsels clear boundaries around shared resources.
Which years matter most?
Dragon years clash the storehouse open; Rabbit, Tiger and Horse years fan its hidden Fire. These are the periods when the pillar’s banked themes become current events.
Not sure whether Geng Xu is your own day pillar? Check it quickly — plot your chart free with the Ba Zi calculator and read your day stem and branch off the grid.