Budoji is a pseudo-historical work on East Asian and Korean culture written by Bak Geum (박금) in 1953, that claims to be a recollection of the contents of the original Budoji, which is supposedly one of the 15 books in a collection called Jing Shim Rok that has been passed down from the period of the Silla dynasty.
The Budoji is claimed to have been the first of the 15 books of the Jing Shim Rok with its focus on ancient history.
The book is considered to be part of a pseudo historical narrative and is widely regarded as false by mainstream historians.
Budoji states that there were four Heavenly people, who were Hwanggung (황궁; 黃穹), Baekso (백소,白巢), Cheonggung (청궁,靑穹) and Heukso (흑소,黑巢).
This chapter describes the supposed historical story about the four Heavenly people of Hwanggung, Baekso, Cheonggung and Heukso.