Feng Shui is most commonly associated with interior designing or vaastu shastra, you might find it quite surprising that feng shui principles can also be used to check compatibility between you and your partner. Kua number or the gua number is thought to be immensely important according to the feng shui principles. Feng shui astrology says that the kua number or the gua number not only has an important role in bringing peace, prosperity and success to your life but also has the ability to do a feng shui compatibility test. Compatibility between two persons depends on the type of persons they are, the way of thinking they have and the core personality traits that are innate in both. If these aspects of the two partners find harmony among themselves with the perfect mixture of dominance, tolerance, compromise, uncertainty, stability and security, the compatibility level is sure to be strong. Again, the basic instinctive features in the partners can ruin the relationship between the two despite the strong attraction for each other.