ividual's behavior. People are not only expected to "follow the mean," but social roles and the relationships between those roles are precisely defined. In this environment, different ideas tend to be welltolerated. Such tolerance is reflected in the pleurality of concepts which characterize medical development in China from the T'ang to the Ch'ing dynasty.
For instance, the Sung era saw a reemergence of both Taoism and Buddhism (163). Then, during the T'ang epoch, Wang Ping introduced the theories of cosmobiology. For the most part, these postulates involve five phases of circulation
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