Convenience goods usually refer to goods that consumers often need at any time, and do not need to spend a lot of time and energy to buy them. They can be further divided into three categories: first, daily necessities, such as toothpaste, cigarettes, soap and so on. The second is impromptu purchase, such as books, newspapers, magazines, handicrafts and so on. Third, special needs, such as rain gear, prickly heat powder, mosquito-repellent incense and so on.