In fact, "reducing the quantity without reducing the price" has played an "edge ball", taking advantage of the habit that ordinary consumers tend to ignore the change of beverage capacity, allowing consumers to buy the beverage without raising the price, which is suspected of infringing consumers' right to know and fair trade. Although there is no legal judgment in China at present, "slimming without reducing prices" and "changing packaging" are illegal, and it is difficult to identify them legally.

However, some lawyers said that even if it is not illegal, as an enterprise, taking a disguised price increase is equivalent to deceiving consumers. Although the law does not expressly stipulate that this is not the case, and there are no clear legal consequences, this practice of enterprises violates integrity and should not become an industry practice.