If you recharge at the headquarters, you can recharge at the recharge machine on the wall on the first floor of the college canteen. The top-up machine can transfer money to the card through the bank, eat in the canteen and go to the education supermarket to buy things.
In Jiading, the recharge is on the first floor of the old canteen, and cash transfer is also acceptable. When there are many people, you can transfer money in the administrative building at the school gate, but you can't spend money outside the canteen. It's useless except for students who don't have water heaters in the dormitory to use in the bathroom.