major movement in Confucianism from the Song to the mid-Qing dynasties, encompassing both the School of Principle and the School of Mind; also called 宋学 sòng​xué

(bound form) natural science; the physical sciences

specific rationalist branch of Neo-Confucianism typified by Cheng Hao, Cheng Yi, and Zhu Xi; also called 道学 dào​xué or 性理学 xìng​lǐ​xué