Eat first-> get a water ticket-> exchange this water ticket with my valid student ID card-> you can get a 20% discount next time ~

Usually when eating, the waiter will use my student ID card to discount the card, and then symbolically ask you to sign it. . . Although the card has a number, it is generally not handled (troublesome). . .

To sum up, in theory, your own card can't be discounted, but in practice, there is no problem.

If you really don't feel at ease, just order a cup of the cheapest water and exchange a water ticket for a card to eat.

By the way, individual packages (which have disappeared recently) and afternoon tea are not discounted ~ and the valid range of student ID cards is from high school/three books to undergraduate/junior college.

Have a nice meal ~ haha