13th-century Daoist author (pseudonym), active c. 1200–1300. Hào Yǐn zhī 隱芝 (“Hidden Mushroom”, evoking the zhī 芝 magical mushroom of immortality-lore plus yǐn 隱 Daoist retreat). Author of the commentary on the Yuán dào zhēn jīng preserved as DZ 761.
Activity. 13th century. No precise dates. No CBDB record.