This Royal genealogy is a state's official record of demographic information about the members ofthe Royal family. However, this book only contains information about the lineal members, from Yi Han, a putative apical ancestor of King Taejo, the founder of Joseon Dynasty to King Taejong, the 3rd king of Joseon. As to its status as the Royal genealogy record, its cover was wrapped in elegant navy silk, and the title of the book was written on a separate piece of white silk and attached on the cover.