Chinese coins are the most potent symbol of wealth. They are a rounded shape with a square hole in the center. The circle represents heaven while the square represents earth. When used by humans, they represent the cosmic trinity of luck of “Heaven-Earth-Man”. There is the Yang side (with four Chinese characters according to reign of emperor) and the Yin side (2 characters) on every Chinese coins. The Yang side should always be used facing up or if you wear it facing out. Chinese coins are powerful emblems of wealth, endless fortune and prosperity.