开元三大士 (開元三大士) kāiyuán sān dà shì

kāiyuán sān dà shì phrase three great sages of Kaiyuan
Domain: Buddhism 佛教 , Subdomain: Esoteric Buddhism
Notes: Namely, 善無畏 Śubhakarasiṃha, 金剛智 Vajrabodhi, and 不空 Amoghavajra; known for the introduction of Esoteric Buddhism into China in the Kaiyuan reign of the Tang dynasty (FGDB '開元三大士'; Goble 2019, p. 25)