Jade is a kind of pure natural mineral. In ancient China, it's just used by dynasty. China has won the pride of "jade kingdom". Using jade as materials, engrave it to be fine decoration that can pretty up our life, edify temper, and dispel diseases for longevity. Thus jade is really special in Chinese culture, also as the Chinese saying goes: Gold has a value; jade is invaluable. The wise have likened jade to virtue. For them, its polish and brilliancy represent the whole of purity; its perfect compactness and extreme hardness represent the sureness of intelligence; its angles, which do not cut, although they seem sharp, represent justice; the pure and prolonged sound, which it gives forth when one strikes it, represents music. Its color represents loyalty; its interior flaws, always showing themselves through the transparency, call to mind sincerity; its iridescent brightness represents heaven; its admirable substance, born of mountain and of water, represents the earth. Used alone without ornamentation it represents chastity. The price that the entire world attaches to it represents the truth. To support these comparisons, the Book of Verse says: When I think of a wise man, his merits appear to be like jade.