The Chinese Zodiac (Sheng xiao, 生肖) is a scheme that relates each year to an animal and its reputed attributes, according to a 12-year cycle. Chinese Zodiac combining with 10 the Heavenly Stems and 12 Earthly Branches is widely used as a means of numbering days and years, not only in China but also in other East Asian nations like Japan, Korea, and Vietnam.
The zodiac traditionally begins with the sign of Rat – 鼠 (子), and the rest are Ox – 牛 (丑), Tiger – 虎 (寅), Hare – 兔 (卯), Dragon – 龙 (辰), Snake – 蛇 (巳), Horse – 马 (午), Ram – 羊 (未), Monkey – 猴 (申), Rooster – 鸡 (酉), Dog – 狗 (戌), Pig – 猪 (亥).
Why Chinese Zodiac was in such a order has long been an interesting topic in China since it came into being. Many famous Chinese scholars, even including Zhu Xi and Wang Shou Ren, the two most important Neo-Confucian thinkers since Song Dynasty, brought out their own explanation.