I understand that these are quite popular:

1. Fried chicken: fried chicken is a kind of snack with crisp appearance and fresh inside, which is very popular. Simple production, suitable for novices.

2. Hamburg: Hamburg is a popular western fast food, which is simple to make, fast to serve and low in investment cost, and suitable for small entrepreneurs.

3. Milk tea drinks: Milk tea is one of the hottest drinks at present, with great market potential. The investment of tea shop is lower than that of fried chicken in Hamburg, and the operation is simple, which is suitable for young people to operate.

4. nutritious breakfast: modern people pay more and more attention to health preservation, and the demand for nutritious breakfast is growing. Breakfast shops are easy to open and the passenger flow is relatively stable, but it is necessary to overcome the difficulty of getting up early.