Iu Mien women embroider trousers from the back of the cloth. No pattern is drawn, no glance is taken at the front, and the count is held entirely in memory — the design surfaces only when the piece is turned over. A single pair takes six months or more and is worked crotch to cuff with no ground left plain.

This system takes the reverse face as its working surface: near-black indigo as the field, deep carmine floss as the figure, and a stitch grid that forbids curves. Density is not decoration here; it is the achievement.