Chengdu has set off the trend of "leftover blind boxes" The term "blind box" has gone from the "unknown fun" of luck to the "living blind box" It refers to the food that the merchant fails to sell during the shelf life, with a large amount of discount price advantage. The aim is to achieve the purpose of "reducing food waste", to a certain extent, but also to help the merchant recover the "cost of raw materials" It is uncertain how many desserts are sold at a discount each day, but based on the day's sales, there are about five or six servings.