Witnessed by: TCM

Silkworm droppings (Bombyx mori), of the Bombycidae (Insecta) family. The mulberry silkworm larva, fed on nothing but mulberry leaf; native range: swept from the rearing trays of the mulberry silkworm wherever silk is raised, chiefly the silk districts of China. Globally recognized as can sha (蠶砂 / 晚蠶砂) in Chinese, and silkworm droppings, silkworm sand in English. The part used is the dried droppings, sifted free of leaf and floss. Small dark grey-green cylindrical grains, dry, light and hard, ridged along their length, smelling faintly of hay and mulberry.

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