Where is a stall selling pig's trotters?

School gate and subway entrance. These are crowded places, or you can set up a stall near the office building. Choose the right time, when people go to school after work, the flow of people is large, and they are generally hungry at this time, and the delicious trotters will attract many people. It is also a very good choice to basically sell out at the end of the day, or to set up a stall at the farmer's market. In short, we must choose a crowded place.