What is "sungmo"

Sungmo (崇母, "Holy Mother"), also called Daemo ("Great Mother"), Jamo ("Benevolent Mother"), Sinmo ("Divine Mother"), Nogo ("Ancient Lady"), Chungkyun Moju ("Empress Mother of the Rightful View") and by other names, is a mother goddess in the Korean indigenous and shamanic religious culture. She is especially regarded as the mother of the Heavenly King and matrix of the mu in some myths. In other myths the mu are instead regarded as descendants of Dangun.