Geomantic omen is an ancient and mysterious knowledge in China. It only deduces the numbers according to the natural law of heaven and earth. There are many schools of Fengshui in China, but they all share the same characteristics. They are based on the Book of Changes written by King wen of Zhou. Today, the geomantic omen is influencing the whole world, even many in North America. Primary schools and universities all have the contents of the Book of Changes.