Architectural introduction: The ancient buildings are reasonably distributed. The banks of the Yuanshui and Wushui rivers are city walls and various palaces. There are various temples, ancestral halls, theaters, academies, inns, villas and cellars built in the city. Most of the building structures are one to two stories, mainly made of wood, with brick and wood structures, and small green tile pitched roofs; the colors are mainly black, white, and gray; the layout is nine streets and eighteen lanes, that is, in There are small alleys outside the main streets.