Yin-Yang are opposite but complementary polarities, they represent the perfect balance generating harmony.
The balance is sought to avoid that the excess of one leads to the destruction of the other with the aim of well-being and a better destiny of a person in a place.
The Yang that characterises the day embodies movement, growth, light, sun, warm colours, hardness of lines and materials.
Conversely, Yin is calm, still, silent, shady, cold colours, wavy or curved, and soft materials.