the circulation industry, as its name implies, is an industry engaged in the flow and trading of goods or services. In other words, the whole process of goods or services from enterprises to consumers after they are produced is circulation. The former is production, the latter is consumption and the middle is circulation. In China, the circulation industry is divided into three categories: broad sense, broad sense and narrow sense, which are selected according to needs. In a narrow sense, the circulation industry only includes retail, wholesale and logistics. The circulation industry in a broad sense includes retail, wholesale, logistics, catering and tourism. In addition to the above five sub-sectors, the general circulation industry also includes hotel industry, leisure and entertainment industry, auction industry, pawn industry, second-hand goods industry and monopoly industry. In China's official statistics, the circulation industry currently only includes retail, wholesale and catering. The logistics industry, which everyone is more concerned about, has a big problem in statistics at present, because it is really difficult to define the division of labor between transportation and logistics.