Don't believe them, especially those operations in advertisements. There are many comments below. As long as you comment, many people will send you private messages. Recently, most of them are operations. They welcome you to disguise their identity as store owners and get close to you, and then add your contact information, and finally start selling courses to you. Don't believe in operations without source of goods. It's fake to let you make money without doing anything.

If there is no source of goods, you should pay attention to the delivery time. Some are shipped within 24 hours, and some are shipped within 48 hours. If the delivery is overdue, it will affect the store. In addition, I personally feel that the agency operation is to let others try to do business with their own money, so it is better to learn the operation by yourself