Tōng yōu jué 通幽訣

Instructions for Communicating with the Obscure

Anonymous; Táng

A Táng Daoist alchemical-esoteric instruction-text on “communicating with the obscure” (tōng yōu 通幽) — i.e., accessing the hidden ingredients and reactions of the alchemical art. Preserved as DZ 913 / CT 913 (Dòngshén bù, Zhòng shù lèi 洞神部眾術類).