Cuī Kǎi 崔凱 (third century, Cáo-Wèi 曹魏), court ritualist, dates not preserved. He has no standard biography in Sānguó zhì and is known principally through citation in Dù Yòu 杜佑’s Tōngdiǎn, where his Sāngfú nánwèn 喪服難問 (KR1d0123) is preserved as a single-juàn fragment.
His principal preserved contribution is the Sì-gū lùn 四孤論 (Four Orphans Discussion), an early biàn-lǐ treatment of mass-displacement-and-orphan mourning protocols set against the Three-Kingdoms famine context. He is most likely a member of the prominent Bó-líng 博陵 / Qīng-hé 清河 Cuī clan (which produced numerous Cáo-Wèi court officials), but the specific lineage-link is not preserved. No CBDB id assigned in current dump.