Chē Gāi 車垓 (1222–1276). Zì Jīngchén 經臣. Native of Tiāntái 天台 (modern Tiāntái, Zhèjiāng). In the Xiánchún era (1265–1274), via the Tèzòu míng (special-recommendation) channel was appointed Dígōngláng 迪功郎 with assignment to Pǔchéngxiànwèi 浦城縣尉 (Puchéng County Defender); declined to take up office on grounds of advanced age. Died Sòng Déyòu 2 (1276) — the year of the fall of Lín’ān to the Yuán.
Studied with his uncle Chē Ānxíng 車安行; Chē Ānxíng studied with Chén Zhí 陳埴; Chén Zhí studied with Zhū Xī 朱熹 — placing Chē Gāi at three generations of removal from Zhū Xī. Cousin (paternal) of Chē Ruòshuǐ 車若水. Author of KR1d0050 Nèiwài fúzhì tōngshì 內外服制通釋 in 7 juan — a comprehensive late-Sòng treatise on the Chinese mourning-grade system, modelled on Zhū Xī’s Wèngōng jiālǐ 文公家禮 (Family Rituals) but supplementing it with diagrams (tú), explanations (shuō), name-and-meaning (míngyì), and tíyào (essentials) for each grade.
The Sìkù tíyào records that the work originally also included two further juan (sānshāng (three-grades-of-young-death) and shēnyī yíyì (deep-clothing question), the latter on the shēnyī burial-garment) — both lost by the Sìkù era. The work was prefaced by Móu Kǎi 牟楷 of Tiāntái in 1349 (Yuán Zhìzhèng 9, jǐyǒu) at the request of Chē Gāi’s son Chē Dàyǎ 車大雅. CBDB id 40242, dates 1222–1276.