10 "represents a combination of positive and negative numbers, so it is also a symbol of marriage. In addition, "10" also symbolizes the turning point of history or the reincarnation in fairy tales, just like Troy was trapped for ten years before its fall. "In Feng Shui, the number 10 stands for perfection, which is a very auspicious number and is suitable for the number of floors when buying a house. Why is 10 the best reason for geomantic omen on the floor? Four reasons: the number of 10 floor is auspicious. The number 10 represents perfection, perfection and enrichment, and feng shui means auspicious, which is suitable for the number of floors when buying a house. According to the general geomantic theory of Yangzhai, the air pollution of the ground floor residence is serious and there is noise pollution.