A Daoist pseudonym (“Perfected of the Mysterious Origin”) used by the anonymous author of [[KR5c0147|DZ 751 Tài shàng xuán líng Běi dǒu běn mìng yán shēng zhēn jīng zhù jiě]] — a late-Yuán or early-Míng Quán zhēn 全真 Daoist commentary on the Běi dǒu longevity-scripture.
Pseudonym. The hào Xuán yuán 玄元 (“Mysterious Origin”) is rich in Daoist resonance — it is a classical epithet of Lǎozǐ (see the Táng canonical title Xuán yuán huáng dì 玄元皇帝 granted by Gāozōng in 666), and invokes the primordial-cosmological dimension of Daoist thought.
Affiliation. Claimed association with Kōng tóng shān 崆峒山 — a sacred Daoist mountain in the Liù pán shān 六盤山 range of Gānsù 甘肅. Kōng tóng shān is traditionally associated with the primordial Huángdì 黃帝, who is said to have received the arts of Daoism there from the mysterious master Guǎng chéng zǐ 廣成子. The affiliation — whether actual or notional — invests the commentary with the prestige of the most ancient Daoist cosmological tradition.
Dating. Active late Yuán or early Míng (c. 1300–1400, per Cedzich’s dating in Schipper & Verellen 2004, 2:5570). No precise lifedates. No CBDB record (Daoist pseudonymous figure).
Work. Only DZ 751 is attributed to this figure. The commentary’s prevailing Chán Buddhist-inflected language places it in the mature Quán zhēn tradition that had absorbed significant Buddhist philosophical apparatus.
Disambiguation. Not to be confused with other Daoist figures bearing the Xuán yuán epithet (especially the canonical Táng title of Lǎozǐ himself). This Xuán yuán zhēn rén is a specific late-imperial Daoist pseudonym.