The alphabet in China comprises of 12 creatures first found throughout the Zhan Guo era[ 5th millennium B.C.]. No one understands the precise place of the original creation of the Zodiac, but perhaps the Han Dynasty[ 206 B.C.–9 A.D.], 2000 years earlier, has formally recognized them. During the North Zhou Dynasty[ 557-581 A.D.], the Zodiac was a frequent way to identify an individual's born year and maybe still is quite prevalent today. The zodiac will be estimated by a period of 60 years every year of the species.