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 [[KR5e1311|DZ 1311 Xiánquán jí]] 4.9a–11a. Compiler (編) of [[KR5a0243|DZ 242 Zhǐzhōu xiānshēng quánzhēn zhízhǐ]], [[KR5e0281|DZ 281 Bàoyī zǐ Sānfēng lǎorén dānjué]], and [[KR5b0281|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.