To be geng metal born in autumn is the blade forged in its own season. Gēng 庚 is Yang Metal at its rawest, the axe-head and unrefined weaponry, blunt and decisive by nature. Autumn is the Metal season, carried by the branches 申酉戌 and running from Li Qiu (立秋 lìqiū) around August 7 to just before Li Dong (立冬 lìdōng) around November 6. Since Ba Zi (八字 bāzì) seasons follow the solar terms rather than the calendar months, a birthday near the edges can sit in a neighbouring season, so confirm the boundary on the free chart calculator before you read yourself as autumn-born.
This is Metal’s home ground. Autumn is when the year turns hard and clear, when the harvest is cut and things are pared down to essentials. The raw blade born into this season is metal surrounded by metal, strong at the root and rarely short of force.
Prosperous (旺 wàng): the blade in its own season
The seasonal state for geng metal born in autumn is 旺 wàng, Prosperous: the season is your own element, giving maximum native strength, so the chart usually needs outlets, not more support. This is Geng at its peak of self-possession, the axe-head that is already hard and does not need to be told twice.
For raw Yang Metal this abundance has a specific flavour. A strong Geng in autumn is decisive to the point of bluntness, quick to cut and slow to soften. The strength is genuine, but unrefined metal at full power can be all edge and no purpose, sharp for the sake of being sharp. The gift is force and clarity. The risk is rigidity, a blade so hard it chips rather than bends, so certain it stops listening.
What this season asks of geng metal born in autumn
Because autumn is Metal itself, this is a companion season: the element around you is your own kind. That is support you already have in surplus, which flips the usual advice. A Prosperous Day Master does not need more Metal or more Earth to prop it up. It needs somewhere to put the force it already carries.
The outlets for raw Geng are the elements it acts upon. Fire forges the blade into a real tool and gives hard metal a shape and a use; in the ten gods this is the authority that disciplines raw power into something governed. Wood is the wealth the blade was made to cut, the material that turns strength into result. Water is the pure output that lets sharp metal flow into expression rather than sit and harden. The steady work of a strong autumn Geng is to spend its strength through one of these channels rather than stockpile it. Piling on more support here is the classic error; it makes an already hard blade brittle. The principle sits inside the wider five elements in Ba Zi, where a strong stem is helped by drain and control, not by more of its own kind. The same logic, walked through element by element for this stem, is in favorable elements for Metal Day Masters.
To feel the contrast, look at the same stem when the season fights it. The effortful, uphill Geng Metal born in spring shows a blade swinging at a whole forest with too little force, the exact opposite of autumn’s easy strength.
Inside the Metal season: 申, 酉 and 戌
申 Shēn, the Monkey month
Early autumn hides Gēng 庚, Rén 壬 and Wù 戊. The main qi is Gēng itself — a Friend 比肩 root in the blade’s own image — but the buried Rén, Geng’s Eating God 食神, means an early-autumn chart often carries its outlet with it: strength and the beginnings of flow in one branch.
酉 Yǒu, the Rooster month
Mid-autumn hides Xīn 辛 alone — Rob Wealth 劫财, the polished blade beside the raw one. This is the hardest, most concentrated Metal of the year, and the month where the strong-chart cautions apply with the least dilution: no hidden outlet, no hidden resource, just more edge.
戌 Xū, the Dog month
Late autumn hides Wù 戊, Xīn 辛 and Dīng 丁. One of the transitional Earth branches 辰未戌丑 where Earth strengthens at each season’s end, it stacks Indirect Resource 偏印 under the companion Metal — and the buried Dīng, Geng’s Direct Officer 正官, is the first flicker of the forge: a late-autumn blade often meets discipline early.
The caveats that change everything
A strong season is only half the strength verdict. Roots, hidden stems and the rest of the chart finish it. A Geng born in autumn but stripped of Earth support and flooded with Water and Wood outlets can read closer to balanced than to overpowering, while another autumn Geng sitting on a full Metal root with companion stems is emphatically strong and needs its outlets urgently. The season points the way, but the whole chart casts the vote.
That is why no single label should close the reading. Work through the full picture in strong versus weak Day Master, and read the raw-blade temperament in depth on the Geng Metal Day Master profile to see how autumn’s strength expresses through the particular chart in front of you. The remaining seasons complete the cycle: Geng Metal born in summer shows the same blade at its weakest baseline in the forge, and Geng Metal born in winter shows it pouring its autumn surplus out into Water.
If you take yourself for geng metal born in autumn, confirm both halves before you trust the reading: that your Day Master truly is Gēng, and that your birth moment lands inside the Metal season by solar term rather than by the calendar. Plot the whole chart with the Butcher Boy calculator and let the roots and outlets, not the season alone, decide how sharp your blade really runs.