Zodiac, that is, mouse, tiger, rabbit, dragon, snake, horse, sheep, monkey, chicken, dog and pig, are matched with twelve earthly branches (Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai) in turn. According to the calculation of modern geomantic masters, geomantic omen will change around 2004, with a certain change law.