Late-Qīng physician of Chéngjiāng 澄江 (= Jiāngyīn 江陰, Jiāngsū), zì Fǔtián 甫恬, active during the Dàoguāng and Xiánfēng reigns. His name is written 吳士英 (with the cǎo radical) in his own 1857 self-preface to Lìjí míngbiàn and as 吳士瑛 (with the yù radical) in the Zhōngguó zhōngyī gǔjí zǒng mù and the present catalog. He claims descent (transmission, not lineage) from Shū Jìnxián 舒進賢, said to be Yú Jiāyán’s 喻嘉言 nephew, and identifies Jiāng Tǐqián 姜體乾 of Huáshù 華墅 as his older contemporary and friend. The descendant Wú Wénhán 吳文涵’s 1922 preface preserves anecdotes about Wú as a qí yī 奇醫 — diagnosing the unsuspected pregnancy of a Zhènjiāng general’s daughter, and so forth — but offers no lifedates. He authored only KR3eh053 Lìjí míngbiàn (1857, first printed 1940 by Chén Sháojiǔ 陳韶九), a focused monograph on dysentery in the Yú Jiāyán nìliú wǎnzhōu tradition. No CBDB record.