Korean shamanism, also known as Muism ( Mugyo "mu [shaman] religion") or Sinism } Shingyo "religion of the shin [gods]", is the ethnic religion of Korea and the Koreans. Although used synonymously, the two terms are not identical: Jung Young Lee describes Muism as a form of Sinism - the shamanic tradition within the religion. Other names for the religion are Shindo ( "Way of the Gods"), Shindoism ( Shindogyo "religion of the Way of the Gods"), Gosindo ( "Way of the Ancestral Gods"), and Pungwoldo ( "Way of Brightness"). It has approximately 5-15 million followers.