Zi Collection, Page Position: Upper, Radical: Silk (mì), Page 117, Entry 07 According to the "Pianhai" (Piānhǎi), it is pronounced the same as "jiān" (cocoon). The "Guangyun" (Guǎngyùn) explains it as black. The "Pianhai" further clarifies that it refers to dark skin. It also refers to rough, chapped skin.