Southern Sòng 宋 classicist and reclusive scholar (chùshì 處士) of Jīnhuá 金華 (Wùzhōu 婺州), with native registration variously given as Yìwū 義烏 and Dōngyáng 東陽 — both subordinate counties of the Jīnhuá prefecture. Zì Tóngshū 同叔; called Xìngxī xiānsheng 杏溪先生 by later writers. Lifedates 1148–1215 are confirmed in CBDB id 49048 and consistent with the network of contemporaries who attest to him: Táng Zhòngyǒu 唐仲友 (1136–1188) is recorded as having admired his command of administrative and topographical detail “as if it were inside his belly,” and Lǚ Zǔjiǎn 呂祖儉 (d. 1196) — younger brother of Lǚ Zǔqiān 呂祖謙 — pronounced him to have “synthesized the great accomplishment of the earlier Confucians.” Qiáo Xíngjiǎn 喬行簡 (1156–1241), later a chief councillor of the Sòng, wrote a preface for his works. Fù Yín never sat the metropolitan examination and held no office. He associated with the Lǚ-school 呂學 of Jīnhuá and is conventionally counted among its peripheral figures alongside Tángshì of Tiāntái 天台 (i.e. Táng Zhòngyǒu). His intellectual project was a project of kǎo 考 — investigative annotation supplemented by hand-drawn diagrams (圖) — which he applied to many texts under the umbrella title Qúnshū bǎi kǎo 群書百考 (“A Hundred Investigations into the Various Books”); the Yǔ gòng shuō duàn 禹貢說斷 (KR1b0012) preserved in the Sìkù quánshū is the only one of these kǎo now extant.