If the customer corresponding to the main mobile phone number of the uplink transfer and remittance instruction only has a contracted transfer-out account and a unique agreed transfer-in account, the instruction "YDZZ# Amount" can be directly sent to 95533 to complete the transfer between the unique agreed accounts; If the customer only has a unique contracted transfer-out account, he can send "YDZZ# four digits (or alias) # amount after account transfer" to 95533 to complete the transfer between the agreed accounts.