KFC's spicy wing tip was removed from the shelves in 221, because it was a new product launched in 219, and KFC could not know its market popularity in advance. Therefore, this is a routine practice in commercial operation and usually will not be sold continuously. At the same time, due to the hot summer, people's appetite is generally poor, and the consumption frequency of mainstream KFC products is much less in other seasons, so new products are introduced to attract consumers.