The Sacred Chao is not the Yin-Yang of the Taioists. It is the HODGE-PODGE of the Erisians. And, instead of a Podge spot on the Hodge side, it has a PENTAGON which symbolizes the ANERISTIC PRINCIPLE, and instead of a Hodge spot on the Podge side, it depicts the GOLDEN APPLE OF DISCORDIA to symbolize the ERISTIC PRINCIPLE.
The Sacred Chao symbolizes absolutely everything anyone need ever know about absolutely anything, and more! It even symbolizes everything not worth knowing, depicted by the empty space surrounding the Hodge-Podge.
The choice of the Pentagon as a symbol of the Aneristic Principle is partly related to The Pentagon in Washington D.C., and partly a nod to the Law of Fives. The Golden Apple of Discordia is the one from the story of The Original Snub (below).
"And with that he revealed his scroll. It was a diagram, like a yin- yang with a pentagon on one side and an apple on the other. And then he exploded and the two lost consciousness."
AnEris is her syster