Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
천도론은 우주와 인간의 관계를 설명하는 이론이다.Cheondoron-eun ujuwa ingan-ui gwangyereul seolmyeonghaneun il-eonida.The theory of heavenly way is a theory that explains the relationship between the universe and humans.