Yin Yang (or Yin and Yang) is a symbol that originated in what country?

The Yin Yang symbol consists of a circle divided into two halves by a curved line. One half of the circle is black, representing the yin side. The other is white, for the yang side. A dot of each color is situated near the centre of the other's half. The two halves are thus intertwining across a spiral-like curve that splits the whole into semicircles, and the small dots represent the idea that both sides carry the seed of the other.

The white dot in the black area and the black dot in the white area suggest the unity of opposites to form a whole. The curvy line signifies that there are no absolute separations between the two opposites. So the Yin Yang can be considered as a symbol of change, paradox, unity in diversity, change, and harmony.

The origin of the yin-yang symbol is found in the ancient Chinese time-keeping system of using a pole to measure the changing lengths of shadows over the solar year. It was invented in China at least as long ago as 600 BCE. In fact, some have suggested that the Yin Yang symbol closely approximates a graphical representation of the daily change of a pole's shadow length during the year. Yang begins at the winter solstice and indicates the beginning of the period when daylight dominates over darkness and thus is associated with the sun. The yin begins at the summer solstice and represents the dominance of darkness over daylight and is associated with the moon.