According to Chinese mythology and traditional Chinese historiography, the Three Sovereigns and Five Emperors were a series of sage Chinese emperors, and the first Emperors of China. Today, they are considered culture heroes, but they were widely worshipped as divine "ancestral spirits" in ancient times. According to received history, the period they existed in preceded the Xia dynasty, although they were thought to exist in later periods to an extent in incorporeal forms that aided the Chinese people, especially with the stories of Nüwa existing as a spirit in the Shang dynasty and Shennong being identified as the godly form of Hou Ji and a founder of the Zhou dynasty.