Zāng Dádé 臧達德 (hào Gōngsān 公三, b. 1750 by self-statement in his 1814 preface “at age sixty-five”), Qīng physician of Zhūchéngxiàn 諸城縣 (Shāndōng). Third-generation family-tradition practitioner, associated with the Wǔliánshān 五蓮山 medical practice of eastern Shāndōng; signed his autobiographical preface to KR3eq030 Lǚshuāng jí 履霜集 at the Wànghǎi shūlóu 望海書樓 (Watching-the-Sea Library) on Wǔliánshān in 1814. His Lǚshuāng jí is a useful regional-medical document for eastern Shāndōng practice — a tradition underrepresented in the Lower-Yangtze-dominated Qīng medical literature. The local friend Wáng Hèlǚ 王鶴侶 (“Master of the Crane Companion”) encouraged him to publish his family methods. Not in CBDB.