Tài jí zhēn rén jiǔ zhuǎn huán dān jīng yào jué 太極真人九轉還丹經要訣

Essential Instructions of the Tàijí Perfected on the Nine-Cycle Return-Elixir Scripture

Anonymous; early Six Dynasties

An early Six-Dynasties alchemical instruction-text on the jiǔ zhuǎn huán dān 九轉還丹 (nine-cycle return elixir), attributed to the Tài jí zhēn rén 太極眞人 (Perfected of the Great Ultimate). Preserved as DZ 889 / CT 889 (Dòngshén bù, Zhòng shù lèi 洞神部眾術類).