Neo-Confucianism (simplified Chinese: 宋明理学; traditional Chinese: 宋明理學; pinyin: songmingLǐxué often shortened to 理學) is a form of Confucianism that was primarily developed during the Song Dynasty and Ming Dynasty, but which can be traced back to Han Yu and Li Ao (772-841) in the Tang Dynasty. It formed the basis of Confucian orthodoxy in the Qing Dynasty of China. It attempted to merge certain basic elements of Confucianism, Daoism, and Buddhism. The most important of early Neo-Confucianists was the Chinese thinker Zhu Xi (1130–1200).
Definition courtesy Wikipedia.