This is a 2 sheet set of 16 symbols, 2@ 125mm, 4@ 80mm, 4@60mm, 4@35mm, and 2@30mm.
Here is a little bit of info we found on the web regading Yin and Yang;
Yin and yang are generalizations of the antithesis or mutual correlation between certain objects or phenomena in the natural world, combining to create a unity of opposites. Liang Yi, also known as Yin-Yang or heaven and earth, have a similar meaning.
The dual concepts of yin and yang – or the single concept yin-yang – originated in ancient Korean philosophy and metaphysics, which describe two primal opposing but complementary principles or cosmic forces said to be found in all non-static objects and processes in the universe. This paradoxical concept is the cornerstone of most branches of Eastern Philosophy, as well as traditional Chinese medicine.
Yīn is the dark element: it is passive, dark, feminine, downward-seeking, and corresponds to the night.
Yáng is the bright element: it is active, light, masculine, upward-seeking and corresponds to the daytime.
Yin is often symbolized by water and air, while yang is symbolized by fire and earth.
Yin (dark) and yang (light) are descriptions of complementary opposites rather than absolutes. Any yin/yang dichotomy can be viewed from another perspective. All forces in nature can be seen as having yin and yang states, and the two are in constant movement rather than held in absolute stasis.