What This Is
The bluntest of the stem clashes. 甲 is yang Wood, 庚 is yang Metal, and Metal cuts Wood. The two stand opposite on the stem cycle, same polarity locked in a 克, and the collision is direct and forceful. Because 天干 governs the outward, the visible, the active, a stem clash is conflict that shows on the surface — 甲庚冲 is the disagreement had out loud rather than the tension carried quietly inside.
It is open, plain, and unhidden: the most external and forceful of the same-polarity stem clashes.
When It Fires
It fires when 甲 and 庚 stand in the chart's stems in opposition. Adjacent stems clash hardest; separated by a position, the force lessens. A stem standing between them, or a Water stem to pass the force through — Metal feeds Water, Water feeds Wood — turns the collision into a current. A combining stem can also tie up one side and neutralize the clash.
What It Changes
It brings a conflict to the open. Where a branch clash runs deep and structural, this stem clash plays out on the surface — in stated positions, visible friction, the directness of a thing argued rather than suppressed. It is metal meeting wood: a cutting force against a growing one, decisiveness against expansion, the pruning edge against the thing it prunes.
Held without mediation, it is plain friction. Given a channel, the same opposition becomes productive tension — the cut that shapes rather than merely severs.
How To Read It
Read it by adjacency and by mediation. Side by side, the clash is sharpest and most external; separated, it softens. The decisive variable is whether the chart gives the force a way through: a Water stem between them passes Metal into Wood cleanly, converting the war into a generative current, and a combining stem can bind one pole and ease the collision.
So the reading is never a flat verdict. An unmediated adjacent 甲庚冲 reads as open friction; a mediated or distant one reads as tension the chart can use — the cutting force giving shape to the growing one. The clash against the chart's means of resolving it is the whole question.
Where This Shows Up
A clash of this kind is felt in the open register — in stated disagreements, in the friction between a decisive, cutting impulse and an expansive, growing one, in conflicts that surface plainly rather than simmering underneath. Where it sits unmediated, life carries a recurring collision between these two forces, played out visibly.
Where the chart channels it, the same opposition becomes a working tension — the metal disciplining the wood, the editor shaping the growth, decisiveness giving form to expansion. The texture is external and direct: a clash that shows, for better when there is a way through it and for friction when there is not.