Does the subject want to ask "how to use the China UnionPay Express Accommodation and Catering Voucher"? Used at the checkout of the store.

1. First of all, after the user successfully receives the accommodation and catering voucher, he needs to inform the cashier to use the China UnionPay Express APP accommodation and catering voucher when checking out at the store.

2. Secondly, show the payment code generated by China UnionPay Express APP and wait for the cashier to scan the code to complete the payment operation.

3. Finally, open the scanning function of China UnionPay Express APP, scan the payment code of the merchant store, and complete the payment operation.