Handling and purchasing recharge cards is on the third floor of the digital map. Top-up cards can only be bought with meal cards. When you apply, you have to fill in a form, and then the staff will fill in a string of numbers on the form. The format is 06XXXXX, with 7 digits. The account number is these seven numbers plus @cqupt. That's 06XXXXX@cqupt. The password is the last 6 digits of your ID number. If the first place is 0, don't 0. Just ask the staff about other specific things.