1. Now our school implements a new card and the old card is invalid.

The new card is also a smart card: this card is used for eating, library, including exams, etc. With my own photo on it. Why would anyone sell it to you? Unless he doesn't want to graduate.

2, the old card is not easy to find, because each student number corresponds to a meal card, and there is a password on the back of the meal card. If a student falsely claims that his meal card is lost and gives you a new one, his original card will be automatically invalidated. So only students who don't eat in the canteen can sell you the old cards.

Reminder: Now only senior students have senior citizen cards. Because I lost my meal card, I lost money after graduation. So you have to pay more money before someone will sell it to you. And it can only be eaten until next year, because the student graduation meal card will be automatically invalidated.

Temporary cards are only issued by the school to people who come to Beijing University of Technology for business. Therefore, unless you know the leader, it is almost impossible to get a meal card from the following people.

Generally, it is only a few tens of dollars, not necessarily. It seemed to be 30 yuan last year. Ask who wants to sell. I won't sell my card, hehe.