In Sioux mythology (Indigenous American mythological tradition that includes Lakota mythology), Anpao (Lakota: Aŋpáo[1]), or Anp, is a spirit with two faces that represents the dawn.
Anpao dances with Han, a primordial spirit of darkness, to ensure that Wi does not burn up the Earth, resulting in day and night.
George Bushotter (Yankton Dakota-Lakota, 1860–1892) wrote that when his younger brother was ill, the brother was told to pray to Anpao, the Dawn, and recovered.[2]
Anpao zi is the "yellow of the dawn", which oral history described as the meadowlark's breast.[3]