The basic causes for the occurrence >Exteriorly-interiorly related With the relation of generation, restriction,subjugation and reverse restriction according to the theory of five elements/phases Closely related functionally Tianfang Wang BUCM 3Exteriorly-interiorly related With the relation of generation, restriction, subjugation and reverse restriction according to the theory of five elements/phases  Closely related functionally Tianfang Wang BUCM 3 The basic causes for the occurrence ？