What problems should we pay attention to when selling things at the school gate? What do you sell for change? Please understand this and give me an opinion.
If you have enough money, I recommend you to join a drink shop, such as Express. That's easy to use and it will make you worry. It is not competitive to set up your own stall, unless there is no drink shop at the door, or your drink is unique. The security guard may ask the stall owner to leave. It is best to open a creative jewelry store, free of charge.