Yin Yang is not "Good and Evil" actually. Common Americanized misconception really. See, Yin is the aspect of femininity, of cold, wet, Soft and of the Earth. Yang is masculinity, of hot, dry, Hard and of the Sky. They are of opposites that connect and flow as one force, always spinning. The Yin within Yang and Yang within Yin is the aspect of duality, that all forms contain that which is opposite. The Water can be soft and flowing, yet hard and crashing.

It has little to nothing to do with two energies fighting over dominance or being about good or evil. Completely acceptable mistake of course, due to our very culture.

Pic related.

See, if people would just watch Avatar they would know this by now.

Or maybe just research taoism.

Avatar was the first place I saw/heard it explained properly.

meh. I havent seen avatar mention yin yang properly. First time i read about it was in an article about taoism. i saw/heard it in a chinese movie

It's the episode where Saca's squeeze turns into the moon.

Not that much of an avatar fan, just watched it. Seriously? You don't know what a squeeze is?