Yin Metal — 辛

Yin Metal is jewelry, refined alloy, the finished surface. A Xin day master tends toward precision: a keen eye for quality, for what is slightly off, for the detail others call fussy until it matters.

In a four pillars chart, the day stem is the self. Xin's self polishes — itself, its work, its surroundings. What reads as delicacy is usually a rigorous standard that never lowered.

Metal belongs to autumn in the Chinese calendar. Xin keeps autumn's best habit: sorting — keeping what is genuinely fine and releasing what only looked fine.

The shadow is perfectionism as self-criticism — the jeweler's loupe turned inward. The reflection is remembering that value does not require flawlessness.