Tian

Tiān () is one of the oldest Chinese terms for heaven and a key concept in Chinese mythology, philosophy, and religion. During the Shang dynasty (17–11th centuries BCE), the Chinese referred to their supreme god as Shàngdì (上帝, “Lord on High”) or  (,”Lord”). During the following Zhou dynasty, Tiān became synonymous with this figure. Before the 20th century Heaven worship was an orthodox state religion of China.

In Taoism and Confucianism, Tiān (the celestial aspect of the cosmos, often translated as “Heaven”) is mentioned in relationship to its complementary aspect of  (, often translated as “Earth”). These two aspects of Daoist cosmologyare representative of the dualistic nature of Taoism. They are thought to maintain the two poles of the Three Realms (三界) of reality, with the middle realm occupied by Humanity (Rén), and the lower world occupied by demons; () and “ghosts,” the damned, specifically (Guǐ).