Taoism southern China and Taiwan may often be identified by their roofs, which feature dragons and phoenixes made from multi-colored ceramic tiles. They also stand for the harmony of yin and yang (with the phoenix representing yin). A related symbol is the flaming pearl, which may be seen on such roofs between two dragons, as well as on the hairpin of a Celestial Master. In general though, Chinese Taoist architecture lacks universal features that distinguish it from other structures. At ancient times, before Daoism Religion was founded, food may be set out as a sacrifice to the spirits of the deceased
Taijitu the "yin and yang symbol", itself popularly called "taijitu", represents the second of these five parts of the diagram. The term "taijitu" in modern Chinese is commonly used to mean the simple "divided circle" form (), but it may refer to any of several schematic diagrams that contain at least one circle with an inner pattern of symmetry representing yin and yang. While the concept of yin and yang dates to Chinese antiquity, the interest in "diagrams" (圖 "tú") is an intellectual fashion of Neo-Confucianism during the Song period (11th century), and it declined again in the Ming period, by