丙 × 庚
Yang Fire and Yang Metal Compatibility in Korean Saju
The Sun (병화 (byeonghwa)) · The Blade (경금 (gyeonggeum))
Dynamic pairing
A control (상극) pairing — one energy shapes the other. The most demanding relation in the cycle, and often the most growth-forcing.
The Pairing: The Sun Meets The Blade
Yang Fire (丙, the sun) brings broadcast warmth that reaches everyone at once. Yang Metal (庚, the blade) brings forged decisiveness that holds its lines. In the Five Element cycle, Fire controls Metal — the sun presses on the blade, which makes this one of the charged pairings: friction that either sharpens both people or wears them down. Both are yang stems — two initiators, two forward charges. There's no shortage of momentum in this pairing; the question is whether the two currents run parallel or collide.
How the Energy Flows
Fire controls Metal in the 상극 cycle — the axis of pressure. The Sun acts on the blade the way the element acts: shaping, checking, demanding. Classical readings are careful here: 상극 is not a curse. Control is how raw material becomes form — but only when the pressure is wanted and measured. Charts and maturity decide which version a given couple gets: the sculptor's chisel, or the grindstone that never stops.
In Love
Yang Fire loves generously and visibly — warmth at full volume, impossible to miss and hard to dim. Yang Metal loves with total loyalty inside clearly drawn lines — the word given once is the word kept. The match works when each learns to read the other's dialect of care rather than waiting for their own. Yang Fire needs a partner who can stand direct sunlight without wilting and tell the sun when to set. Yang Metal needs a partner who values a kept promise over a performed one, and asks for time before the verdict. Whether each can supply what the other is missing — rather than what they themselves would want — is the real compatibility question, and it's the one the element cycle frames but doesn't answer.
Where It Rubs
The 상극 axis means pressure is built into the pairing's physics: Yang Fire's natural mode can land on Yang Metal as constraint, and Yang Metal's response can read to Yang Fire as resistance. Underneath sit the two individual traps: Yang Fire's is burnout — shining for everyone until nothing is left; Yang Metal's is finality — cutting cleanly where mending was possible. Most conflict in this pairing is one trap activating the other.
Making It Work
Make the pressure opt-in. Yang Fire's shaping instinct is a gift exactly as long as Yang Metal has asked for it — the same sentence lands as sculpting or as grinding depending on consent and timing. And Yang Metal owes the pairing honesty about limits before resentment does the talking. 상극 couples that work convert the pressure into growth on purpose; the ones that don't just erode.
Go Deeper on Each Day Master
This page reads the pairing; the individual archetypes each have a full deep dive — Yang Fire (丙): The Sun and Yang Metal (庚): The Blade. For how full-chart compatibility readings work beyond Day Masters, see Saju Compatibility: How 궁합 Works.
Frequently Asked Questions
This is a 상극 (control) pairing — Fire controls Metal — which the tradition treats as demanding rather than doomed. These couples either sharpen each other into their best forms or wear each other down; the rest of both charts, and both people's maturity, decide which. Day Masters alone can't settle it.
Yang Fire is drawn to forged decisiveness that holds its lines — a force that doesn't fold under the sun, which is rarer than it sounds. Yang Metal, in turn, reads Yang Fire's "Walks into the room. Owns the room." not as a warning but as the point.
Long-term, this pairing lives or dies on the same axis as its everyday chemistry: whether the built-in pressure stays consensual — shaping by invitation rather than by default. Saju would also weigh both full charts, the luck cycles (대운) each person is moving through, and the branch relationships between the pillars — which is what a complete 궁합 reading covers.
Day Masters are 2 of 16 characters in a couple chart. The full 궁합 reading compares all four pillars of both charts.