In the eyes of folk art creators, fish is a cultural symbol that produces life through mating of yin-yang fish. In art form, it 
appears in pairs. Propagation is to continue life from generation to generation till eternity, which happens in a revolving pattern. Therefore, the art form is "Two spinning fish." The "Eight diagram fish," with two fish on a plate towards opposite directions, implies that mother's body of the universe (the plate) contains yin-yang air. The interaction of the two produces life, and, through propagation, life goes on for ever. The "Buckled bowl", a package with a dish and a lid, is a philosophy symbol. The upper lid symbolizes the sky, and the lower dish is earth, representing the blurry mother's body of the universe before the separation of earth from heaven; yin from yang. One can be separated into two, and two combined in one. In some art works, the Iid opens up with a fish coming out, an implication of life being produced through unification of yin-yang.
