Huáng Kǎijūn 黃凱鈞 (zì Hètíng 鶴亭, hào Yǒuyú 友漁), Qīng physician of Jiāshàn 嘉善 (Zhèjiāng), active in the Jiāqìng — early Dàoguāng era (c. 1790s–1820s by internal evidence — citing late-Qián-lóng ginseng-price collapse, the 1820s Tuìān shīchāo 退庵詩鈔, and a clinical career past middle age). Author of the KR3eq007 Yǒuyúzhāi yīhuà 友漁齋醫話 (eight zhǒng 種 in approximately eight juǎn) — a collected handbook of clinical-theoretical reflections including the practical materia-medica treatise Yàolóng xiǎopǐn 藥籠小品, the pulse-and-diagnosis discussion Lùnmài xiǎopǐn 論脈小品, and a series of department-specific sketches (paediatrics, gynaecology, shānghán practice, case-records). Doctrinally a temperate Wēn-bìng-school inheritor close to Yè Tiānshì 葉桂; his pharmacopoeial reflections are notable for treating drugs in the zhìrén “biographical-sketch” mode rather than the orthodox channel-classification grid. Not in CBDB.