neo-Confucianism (Zhu Xi school); Cheng-Zhu school
Refers specifically to the philosophical system developed by Zhu Xi and his predecessors, which became influential in East Asia. In Japanese contexts, it often denotes the orthodox Confucianism of the Edo period.
During the Edo period, Zhu Xi's neo-Confucianism was regarded as the orthodox scholarship of the shogunate.
彼は朱子学の研究者として知られている。
He is known as a scholar of the Cheng-Zhu school.
From 朱子 (Shushi, 'Master Zhu', referring to Zhu Xi) + 学 (gaku, 'study, learning'). The term directly names the philosophical school founded on Zhu Xi's interpretations of Confucianism.