The construction of ancient water city in China was centered on Guangyue Building, and the urban land was divided into four blocks by using the cross pedestrian mall. Cross Street is a commercial pedestrian street with traditional businesses on both sides. Loudong Street focuses on leisure, health care and health preservation; Louxi Street is a fashionable and high-grade commodity street; Loubei Street is a dining street; Lounan Street is a cultural street. The central plot of the urban unit is a amorous residential area, mainly in the form of quadrangles. The street-facing building is used for small businesses with folk characteristics, with shops in front and houses in the back, which is flexible and convenient.