The merchant list classifies merchants by product. For example, movies, hotels and restaurants have many categories. There will be buffet, hot pot and other small categories in the food category. 2. Merchant type is the classification of merchants and their products. It is equivalent to dividing a large directory into several small directories, such as catering merchants, and the sales volume of Sichuan merchants is the real sales volume of merchants, which cannot be modified by merchants, but the platform administrator can modify the list of merchants. Another way is that the platform grants merchants the right to modify sales.