Of course, the tea shop is mainly milk tea, and others can have snacks, such as steamed stuffed buns, boiled Kanto, tea eggs, drinks and so on. However, since you want to open a milk tea shop, you must ensure that the milk tea tastes good, otherwise others will steal the limelight, and if you are at the university gate, you can sell breakfast in the morning, so many students may not have time to eat breakfast when they wake up for class.

This will be more straightforward, I hope it will help you!