It is imagined that the icons describe the design of the palace of the late Katsuragi Dynasty and that the four types of houses are Takadono (a building placed on the high place), Ko-oku (a raised-floor house), Takakura (a raised storehouse) and Densha (a palace).
葛城王朝末期の宮殿の模様を描いたもので、それぞれの文様から高殿、高屋、高倉、殿舎であろうと推測されている。