Anpao
In Sioux mythology, Anpao, 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 wrote that when his younger brother was ill, the brother was told to pray to Anpao, the Dawn, and recovered.
Anpao zi is the "yellow of the dawn", which oral history described as the meadowlark's breast.