In Dingxi City, there are several factors to consider when setting up a stall: large flow of people, high market demand and relatively small competition. Here are some places that may be suitable for setting up food stalls:

1. Commercial block: Commercial blocks or prosperous areas in Dingxi usually have a large flow of people and high consumption demand. Setting up food stalls in such places can attract more customers.

2. Around the school: The food stall business around the school is generally good, especially near primary and secondary schools and universities. Students have a great demand for snacks and consume them frequently.

3. Near the community: Setting up food stalls near the community is convenient for the surrounding residents to buy, especially at breakfast and dinner time, and residents have great demand for snacks.

It should be noted that different locations may need to be selected according to the types and characteristics of snacks sold. At the same time, it is necessary to ensure that the location of stalls is legal and compliant, in line with local management regulations.