Zhāng Juérén 張覺人 (fl. 1900s–1960s, 民國), Republican-era Daoist-medical pharmacologist of Guǎnghàn 廣漢 (Sìchuān). The principal modern transmitter of the underground Qīng folk-surgical “thirteen formulae” (shísān fāng 十三方) lineage. Obtained a Xiánfēng 5 (1855) manuscript transcript of the tradition from a Chóngqìng book stall in 1939 and worked on it intermittently before finalising the edited compilation KR3ek018 Wàikē shísān fāng kǎo 外科十三方考 (Mínguó 37 = January 1948). His prefaces document an unusually rigorous philological reconstruction of a manuscript lineage that he traces — through his own family-lore — to the late-Qiánlóng Tàiyīyuàn head Zhāng Yúnháng 張雲航, and ultimately to a Daoist transmission at Lónghǔshān 龍虎山. The catalog meta classifies the work as 明, following the folk-tradition’s late-Míng anchor in Huáng Chénghào’s 黃承昊 Zhégōng mànlù 折肱漫錄 (1635), but the received text is a 1948 Republican compilation. Not in CBDB.