If you are asking about the canteen in Haidian headquarters, there are the first canteen and the second canteen, which are adjacent to each other and behind the teaching building. Students from other schools can't buy food in the above two canteens without campus cards, but they can go to the underground canteen from the stairs next to the second canteen, where there is a place to collect cash.

If it is Shahe Campus, there are two canteens in the East and West Campus, but there is no place to collect cash, so in principle, students from other schools can't eat here.