Neo-Confucianism is the cultural revival of Confucianism as an ethical, social, and religious system, which dominated Chinese philosophy from the 13th through the 19th century. Although its origin lies in the Tang dynasty, it was fully developed during the Song dynasty under the formulations of Zhu Xi (1130–1200), the tradition's central figure. Zhu, alongside Cheng Yi and Cheng Hao, comprises the dominant Cheng–Zhu school, in opposition to the later Lu–Wang school led by Wang Yangming and Lu Xiangshan.