Yin and Yang (two complementary principles of Chinese philosophy. Yin is negative, dark and feminine, while Yang is positive, bright and masculine .Their interaction is thought to maintain the harmony of the universe and to influence everything in it)
A big drum symbolizes Yin and Yang in the Asian view of the world
female and male; negative and positive; dead and living; darkness and light; moon and sun
The separation between life and death
This world and the other world