Southern-Sòng nèidān 內丹 master, zì Míngdào 明道, active in the late twelfth century. The colophon to his single surviving Daozang work, [[KR5a0233|DZ 232 Huándān bìjué yǎng chìzǐ shénfāng]], identifies him on the title page as “Xīshān 西山 Xǔ Míngdào shù 述” but in his own narrative he describes himself as a Shānxī 山西 (Shānxī Lù 陝西) native who travelled south during the Chúnxī 淳熙 era (1174–1189) to seek a master, eventually meeting his teacher Péng Mèngqú 彭夢蘧 (zì Bóyù 伯玉, of Yǐngzhōu 郢州) in the Huáidú 淮瀆 temple on Mount Tóngbó 桐栢山 in Suízhōu 隨州 (southwestern Hénán). Péng transmitted the Jīnyè huándān 金液還丹 teaching orally and through diagrams. At the end of his treatise Xǔ provides a brief lineage of the xiūzhēn 修真 transmission: Zhāng Tiāngāng 張天罡 (zì Zǐzhèng 子正, of Shǔ) → Péng Mèngqú (of Shǔ) → Xiāo Yìngsǒu 蕭應叟 (zì Rùnqīng 潤清, of Sānshān 三山) → Xǔ Zǐwēi → Lín Yuándǐng 林元鼎 (zì Zhèngfū 正夫, of Sānshān). No CBDB record was found.