Dà huán dān zhào jiàn 大還丹照鑑
Illumining Mirror of the Great Return-Elixir
Anonymous; early Northern Sòng
A short alchemical summary-text on the great return-elixir (dà huán dān 大還丹), dated by its preface to 962 (Jiàn lóng 3, Sòng Tài zǔ). Preserved as DZ 926 / CT 926 (Dòngshén bù, Zhòng shù lèi 洞神部眾術類).
Dating. 962 (preface). Dynasty: 北宋.