 Fung goes on to argue that, after the Qin dynasty (221–206 BCE) the “art” or scientific tendency within Chinese philosophy all but disappeared. Buddhism, like Daoism, was an extreme “nature” philosophy, and the interactions of Daoism, Buddhism and Confucianism did not produce interest in the understanding of the natural world. In the tenth century CE the Song Neo-Confucians combined Daoist, Confucian and Buddhist teachings into a new philosophy that has persisted to the present. According to the “Great Learning” (Da xue), the ancients who wished to enlighten their bright virtue “investigated things”: