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
Yin and yang < *"ʔəm" compares with Burmese "ʔum" "overcast; cloudy", Adi "muk-jum" "shade", and Lepcha "so'yǔm" "shade"; and is probably cognate with Chinese "àn" < *"ʔə̂mʔ" "dim; gloomy" and "qīn" < *"khəm" "blanket" "Yang" < *"laŋ" compares with Lepcha "a-lóŋ" "reflecting light", Burmese "laŋ" "be bright" and "ə-laŋ" "light"; and is perhaps cognate with Chinese "chāng" < *"k-hlaŋ" "prosperous; bright"; "bǐng" < *"braŋʔ" "bright"; "liàng" < "*raŋh" "(pale) light"; "lǎng" < "raŋʔ" "brilliant light"; "míng" < "mraŋ" "bright, become light, enlighten". Schuessler surmises that those items either are areal words (cf. Tai "plaŋ" "bright") or belong to an Austroasiatic word family (cf.