THE SUN AND MOON
When thinking about 2 subjects: the sun and moon. The first thing I think about them is the opposition. And then, the familiar thing about opposition I image is Yin-Yang theory. For that reason, when required to draw the pictures about the sun and the moon, I decide to draw them in the way that is related to the Yin-Yang theory. Yin-Yang theory is the Ancient Chinese philosophy. There are 6 mains concept in this theory:

1- Yin and Yang include each other: which means nothing yin or yang perfectly. Everything have it own opposition.
2- Yin and Yang are interdependent: which means Ying can not exist without Yang and the opposite way
3- Yin and Yang can be further subdivided into other Yin and Yang.
4- Yin and Yang consume and support each other
5- Yin can transform into Yang and the opposite way
6- Yin is part of Yang and the opposite way
Summarize 6 main elements, 2 things that strongly influent me is : everything has 2 ways and in 1 way also has the another opposite way. So I apply this concept to draw the pictures of the sun and the moon. The moon and the sun can not exist singly and in the moon there is sun and in the sun there is moon.

the moon

the sun
http://www.healingtherapies.info/images/Yin__Yang.gif