Southern-Sòng nèidān 內丹 master in the Wùzhēn piān 悟真篇 commentarial tradition. Lóngméi zǐ 龍眉子 (“Master Dragon-Brow”) is a religious hào; his real name, like those of many other authors in this lineage (Wúmíng zǐ 無名子, etc.), is unknown. Author of [[KR5a0152|DZ 151 Jīnyè huándān yìnzhèng tú 金液還丹印證圖]], a chart-and-poem treatise on the cyclically transformed elixir, with preface dated 1218 and colophon dated gēngzi (TC: an error for gēngchén 庚辰 = 1220) but in fact ca. 1222. A second colophon, by Wáng Jǐngxuán 王景玄, claims that the pictures were drawn by Bái Yùchán 白玉蟾 and only the poems were by Lóngméi zǐ; since Wáng addresses Lóngméi as zǔshī 祖師 (“patriarch”), it is possible Wáng was the latter’s disciple. Lóngméi zǐ’s terminology aligns with Wúmíng zǐ’s commentary on the Wùzhēn piān — placing him in the same circle of late Southern-Sòng nèidān practitioners (cf. [[KR5a0142|DZ 141 Wùzhēn piān zhùshū]], DZ 142 Sānzhù, DZ 143 Zhízhǐ xiángshuō sānchéng bìyào, etc.). No CBDB record was found.