1. mail-order funds can be redeemed in mobile banking. The premise is that the bank card of the fixed investment fund must sign a contract with the mobile banking, where the fund business-fund redemption can be directly operated.

2. Mobile banking service, also known as mobile banking, is the abbreviation for using mobile communication networks and terminals to handle related banking business.

3. Fixed investment is the abbreviation of fixed-term investment fund, which refers to investing in a designated open-end fund at a fixed time with a fixed amount, similar to the bank's zero deposit and withdrawal method.