Yin Yang

The Yin and Yang Symbol with black representing yin and white representing yang.
The symbol is a visual depiction of the intertwined duality of all things in nature, a common theme in w:Taoism. It is believed to be derived from the 11th century Tiandi Zhiran Hetu (Heaven and Earth’s Natural Diagram of the River), Hetu (Diagram of River), Luoshu (Chart of Luo), Xiantian tu (Diagram of Preceding Heaven) and Taijitu (太極圖) (Diagram of the Ultimate Power).