the resin in the entire tree will gather at the warm spot and flow out,” as one writer explained), which was then burned in a bamboo tunnel to capture the purified soot.51 The soot was mixed with animal glue and sundry other substances such as musk, mother-of-pearl, egg whites, cinnabar, black beans, and camphor in order to achieve the desired consistency, fragrance, and color.52 Finally, the gummy suspension was poured into a mold—decorated with delicate, sculpted designs, ink molds were works of art in their own right—to produce a cake of solid ink for safekeeping.53

