Flash payment: "Flash payment" refers to the non-contact payment specification that meets the national financial standards. It adopts non-contact (inductive) mode, and supports the functions of loan record, electronic cash and other applications.

E-cash: The e-cash account in the UnionPay financial IC card issued by the bank is an account for the convenience of cardholders in small amount and quick consumption. The process of using the card is similar to that of the bus IC card, and fast payment can be realized without entering a password or "waving a card" signature.

Flash payment is a payment standard that can be paid without contact, and electronic cash is a small account launched by banks to facilitate users not to lose their passwords in small amounts. Considering the security factors, the money in the e-cash account needs to be actively deposited, which is equivalent to your bank card being tied with a card similar to a bus card, and the balance of both accounts is unused, so you can charge the e-cash from the ordinary account (that is, deposit).