Nearly three thousand years ago, the Chinese civilization discovered "five elements" (gold raw water, aquatic wood, wood generates fire, fire adobe, native gold), and "five elements g" (metal, wood, wood overcomes earth, earth water, water fire, fire grams of gold), the use of this "with students" and "mutual restraint" of the law, and constantly develop technology to create material for the benefit of mankind, a profound understanding of: the five elements are indispensable, not destroy the balance between the five .