Yóu Yù 尤焴 (1182–1264) was a Southern-Sòng official and literatus from Wúxī 無錫 (Jìnlíng 晉陵 / Pílíng 毗陵), descended from the prominent Yóu family of Wúxī. He earned his jìnshì 進士 and held a series of administrative posts in the late Southern-Sòng court. His preface (1249) to [[KR5a0291|Xiāntiān jīndān dàdào xuán’ào kǒujué 先天金丹大道玄奧口訣]] (DZ 279) by Huò Jìzhī 霍濟之 — a fellow PílíngWúxī native — parallels Qū Yuán’s 屈原 Yuǎn yóu 遠遊 and Zhū Xī’s 朱熹 reading of the Cāntóngqì 參同契 with respect to “the heart’s stirring resentment and grief,” deplores the sea of futile alchemical writing (“a wagon-load of works to be sweated by an ox, but those who attain the truth absent altogether”), and praises Huò’s text as substantially clearer than any other in print. The preface is signed Chúnyòu jǐyǒu mèngxià sìyuè shuò Jìnlíng Yóu Yù jǐn shū 淳祐己酉孟夏四月朔晉陵尤焴謹書 (1st day, 4th month, 1249). Sources: Wànlì Wúxī xiànzhì 萬曆無錫縣志 12.3a; CBD 1, 382–3.