Cài Yìtíng 蔡益亭 (míngjīng 明經 graduate; fl. late 18th – early 19th c.) — nephew of 伊學曾 Yī Xuézēng. After Yī’s death he inherited the manuscript of Tāichǎn zhǐnán (KR3ei053) and circulated copies among colleagues; his protégé 歐孔章 Ōu Kǒngzhāng ultimately commissioned the 1856 wood-block edition. Not in CBDB.