The building scale of the Anxi Wangfu is very large. In recent years, archaeologists have visited the Kaesong site, and there are exposed yellow, green and white glazed building debris on the surface layer, especially the green glazed tiles, and the yellow dragon-printed round tiles. In feudal society in China, dragon is the symbol of the emperor, only the emperor's palace can be decorated with yellow glazed tiles and decorated with dragon graphics.