Yáng Qīngsǒu 楊清叟 (fl. mid-Yuán, 元), Yuán-period physician of Héchuān 禾川 / Jí’ān 吉安 (modern Jiāngxī). The original author of the surgical treatise that descended through the Jìngmíng 淨明 Daoist lineage as KR3ek004 Xiānchuán wàikē jíyàn fāng and KR3ek007 Mìchuán wàikē fāng, compiled and edited by 趙宜真 Zhào Yízhēn (d. 1382). The manuscript passed through Wú Níngjí 吳寧極 → Wú Yǒuběn 吳有本 → Lǐ Shànguān 李善觀 → Zhào Yízhēn. Yáng’s original work introduced the foundational yīnyáng differential of yōng 癰 versus jū 疽 together with the three Daoist-medical signature plasters huíyáng yùlóng gāo 回陽玉龍膏, hóngbǎo dān 洪寶丹, and chōnghé xiān gāo 沖和仙膏 that became the standard external preparations of MíngQīng surgery. No further biographical record. Not in CBDB.