Within it, the perfectly opposed principles of yin and yang became balanced and Pangu emerged (or woke up) from the egg. Pangu is usually depicted as a primitive, hairy giant with horns on his head (like the Greek Pan) and clad in furs. Pangu set about the task of creating the world: he separated Yin from Yang with a swing of his giant axe, creating the Earth (murky Yin) and the Sky (clear Yang).