Confucianism has often had to contend with other religious systems, notably Taoism and Buddhism, and has at times, especially from the 3d to the 7th cent., suffered marked declines. It enjoyed a renaissance in the late T'ang dynasty (618–906), but it was not until the Sung dynasty (960–1279) and the appearance of neo-Confucianism that Confucianism became the dominant philosophy among educated Chinese. Drawing on Taoist and Buddhist ideas, neo-Confucian thinkers formulated a system of metaphysics, which had not been a part of older Confucianism. They were particularly influenced by Ch'an or Zen Buddhism: nevertheless they rejected the Taoist search for immortality and Buddhist monasticism and ethical universalism, upholding instead the hierarchical political and social vision of the early Confucian teachings.
The neo-Confucian eclecticism was unified and established as an orthodoxy by Chu Hsi (1130–1200), and his system dominated subsequent Chinese intellectual life. His metaphysics is based on the concept of li, or principle of form in manifold things, and the totality of these, called the "supreme ultimate" ( t'ai chi ). During the Ming dynasty, the idealist school of Wang Yang-ming (1472–1529) stressed meditation and intuitive knowledge. The overthrow (1911–12) of the monarchy, with which Confucianism had been closely identified, led to the disintegration of Confucian institutions and a decline of Confucian traditions, a process accelerated after the Communist revolution (1949). Elements of Confucianism survived as a part of traditional Chinese religious practice in Taiwan, Hong Kong, and Macao and among Chinese emigrants and have experienced a modest revival in China since the mid-1990s.