Chén Zhí 陳直 (fl. Yuánfēng 元豐 reign, 1078–1085, 宋), Northern-Sòng official-physician and the original author of the Yǎnglǎo fèngqīn shū 養老奉親書 (KR3e0021, the base of the Shòuqīn yǎnglǎo xīn shū) — the foundational Chinese treatise on elder-care medicine. He served as Magistrate (令) of Xīnghuà 興化 county in Tàizhōu 泰州 during the Yuánfēng era. The work is a fifteen-篇 / 233-entry compendium of dietary regulation, life-cultivation, and emergency-intervention prescriptions for the elderly, organized around seasonal-adjustment principles. The title’s word-order — Yǎnglǎo fèngqīn (Care for the Elderly, Reverence for Parents) vs. the Wénxiàn tōngkǎo’s Fèngqīn yǎnglǎo (Reverence for Parents, Care for the Elderly) — is corrected by the SKQS editors on the basis of the surviving Yuán Zhìzhèng (1341–1370) Zhèjiāng print, which transmits the original. Beyond his Xīnghuà tenure he has no transmitted biographical record.