The Yin - Yang symbol reflects the ancient Chinese understanding of the laws of things. The outer circle symbolizes all things, while the black and white within the circle represent the interaction of "Yin" and "Yang" energies. Yin and Yang are not absolute; they are interdependent. Yin has characteristics such as darkness, and Yang has characteristics such as brightness. The two energies wax and wane, cycle and transform, bringing about changes in all things.