Mushikikai was also divided into four classes (Shimushikijoten): Kumuhenshoten (heaven of Kumuhensho), Shikimuhenshoten (heaven of Shikimuhensho), Musho-ushoten (heaven of Musho-usho) and Hisohihisoshoten (heaven of Hisohihisosho).
無色界は空無辺処天・識無辺処天・無所有処天・非想非非想処天の階層（四無色定天）に分かれてゆくのである。