Does the Shanghai Metro show the remaining balance when swiping the bus card?

It is displayed on a small screen at the entrance and exit gate when you swipe your card to enter or exit the station. In addition, if the Shanghai Bus Card is used for more than 80 yuan in a calendar month (1-30/31), the excess amount will be discounted. If you later find that there are a few dimes displayed on the transportation card, it means that you are given a discount.