You can go and have a look. If there is a gap in the canteen, it seems to be to attract investment. You usually have to know someone. For example, students sell fruits downstairs in the dormitory, and a booth in the second canteen is opened by a tour guide. The water bar in the teaching building is said to be opened by the chairman's daughter-in-law. I can't remember who the school supermarket is related to. Looks like someone who changed later. In short, there is either money or someone.