Yú Délín 俞德鄰 (1232–1293; CBDB id 28499), zì Zōngdà 宗大, hào Tàiyū shānrén 太迂山人 (“the Mountain-Man Too Round-About”), was a late-Southern-Sòng / Yuán literatus of Yǒngjiā 永嘉 (Wēnzhōu, modern Zhèjiāng), settled at Jīngkǒu 京口 (Zhènjiāng). Jìnshì of Xiánchún guǐyǒu (1273); under the SòngYuán transition he refused to serve the new dynasty (bù shì) and lived in seclusion. His one surviving work is the Pèiwéizhāi jí wén 佩韋齋輯聞 (KR3j0132) in 4 juàn, a substantive kǎozhèng bǐjì on classical, historical, and literary subjects. The book is firmly partisan of the Yǒngjiā school of gōngshì / shìgōng learning (the 陳傅良 (Chén Fùliáng) / 葉適 (Yè Shì) tradition) — and so frequently at odds with the Zhū Xī school. The Sìkù editors note “the Yǒngjiā learning from Zhū’s day was already a separate school, so down to its late descendants the dispute continues unsettled.”