What are the three types of city commercial street, theme commercial street and characteristic street?

Commercial streets can be divided into city commercial streets, theme commercial streets and characteristic small streets. Urban commercial streets-such as Wangfujing Pedestrian Street in Beijing and Nanjing Street in Shanghai. The first consideration of urban commercial street is its function and orientation in the city. Theme commercial streets, such as Beijing Sanlitun Bar Street and He Shili Building Materials Street. , mainly represented by the collection of similar formats, mostly distributed on both sides of the road, and the business varieties of the same format are very rich. Characteristic small streets, such as the bottom business of some residential areas and office buildings, not only meet the consumption needs of residential areas, but also radiate to the surrounding areas. Over time, the neighborhood atmosphere naturally formed.