Yuán-era Quánzhēn 全真 nèidān 內丹 master, conventionally identified as Jīn Zhìyáng 金志陽 (hào Péngtóu 蓬頭, “the Tousled-Hair One,” 1276–1336), the master who lived on Mount Lónghǔ 龍虎山 (Jiāngxī) and Mount Wǔyí 武夷山 (Fújiàn) and acquired a wide reputation for his mastery of internal alchemy. His biography by Zhāng Yǔchū 張宇初 is preserved at DZ 1311 Xiánquán jí 4.9a–11a. Compiler (編) of DZ 242 Zhǐzhōu xiānshēng quánzhēn zhízhǐ, DZ 281 Bàoyī zǐ Sānfēng lǎorén dānjué, and DZ 576 Bàoyī hánsān bìjué, all of which present teachings transmitted by his disciple Huáng Gōngwàng 黃公望 (1269–1354), the celebrated Yuán painter.
Two cautions on the identification, both raised by Vincent Goossaert in Schipper & Verellen, The Taoist Canon (2004), Vol. 2 §3.B.9.d (1187): (i) the name Yuèyán 月巖 is not attested in any of the surviving biographical material on Jīn Péngtóu, so the identification — proposed by Ráo Zōngyí 饒宗頤, Huáng Gōngwàng — must remain a hypothesis; (ii) the Zhǐzhōu xiānshēng 紙舟先生 (“Master Paper-Boat”) whose teaching the Quánzhēn zhízhǐ purports to record is not securely identifiable. The other two related works (DZ 281 and DZ 576) similarly attributed to Jīn Yuèyán / Péngtóu shed no further light on this question. No CBDB record was found.