The face value of courtesy U-Hui gift card can be set to 1-1, which can be used for drainage activities for merchants, and it can also be set as a day card, a month card, a season card and a year card. The front of this card can be printed with merchants' advertisements, while the back is printed with the QR code of the system and the account number and password, so users can enter the card number and password on the card and use it normally.