Yáo Lóngguāng 姚龍光, zì Yànrú 晏如, native of Dāncóngzhèn 丹從鎮 in Dāntú 丹徒 (now Zhènjiāng, Jiāngsū), fl. late 1880s–early 1900s. A míngjīng 明經 (lower-academy graduate) and reform-era scholar-physician; younger brother of the major late-Qīng official Yáo Xīguāng 姚錫光 (號 Shíquán 石荃). After being nearly killed at age 27 by routine qínlián cooling-cleansing prescribing, he turned to medicine through self-study and produced KR3ep094 Chóngshítáng yīàn (preface dated 1901). His preface is unusually reformist in voice, anticipating the Republican-era project of Chinese-medical institutional modernisation. CBDB 360115 carries the name but its index-year of 1731 does not match this late-Qīng physician — likely a CBDB-internal-data-fault rather than a different person.