Yáo Zhīyīn 姚之駰, zì Lǔsī 魯斯, early-Qīng historian; jìnshì of Kāngxī 48 / jǐchǒu 己丑 (1709), native of Qiántáng 錢塘 (modern Hángzhōu 杭州). His career rose to Jiānchá yùshǐ 監察御史 (Imperial Censor). His one substantial surviving work is the HòuHànshū bǔyì 後漢書補逸 (KR2d0022), in 21 juǎn, an early-eighteenth-century recovery of substantial fragments from eight lost Eastern-Hàn histories: Bān Gù 班固 et al.’s Dōngguān Hànjì 東觀漢記 (KR2d0002, 8 juǎn); Xiè Chéng 謝承’s HòuHànshū (4 juǎn); Xuē Yíng 薛瑩’s HòuHànshū, Zhāng Pán 張璠’s Hànjì, Huà Jiào 華嶠’s HòuHànshū, Xiè Shěn 謝沈’s HòuHànshū, Yuán Shānsōng 袁山松’s HòuHànshū (each 1 juǎn); and Sīmǎ Biāo 司馬彪’s XùHànshū (4 juǎn). The work was completed in Kāngxī guǐsì (1713) at Yáo’s “Lùdí zhāi” 露滌齋 studio in Dōngháo 東臯. The Sìkù tíyào (in KR2d0002) and the entry on the work itself record substantial methodological objections: Yáo did not always identify his sources for individual fragments; and on the question of Sīmǎ Biāo’s treatises, Yáo (following Hóng Mài 洪邁’s earlier mistake) confused them with Fàn Yè’s text. Nevertheless the work was the first systematic recovery of the lost Eastern-Hàn histories and was a major source for the Sìkù recovery of the Dōngguān Hànjì a generation later. CBDB id 66749 (no dates); flourished early 18th c. (Kāngxī).