The bank where the account is opened is the bank where the payer or payee opens an account during the bill settlement. According to the different ways in which the holder submits the bill to the bank, bill settlement can be divided into remittance settlement and entrusted collection settlement. In the fund settlement method of remittance settlement, the payer's bank (paying bank) directly transfers the money to the payee's bank (receiving bank). In the fund settlement method of entrusted collection settlement, the payee entrusts his bank to collect the bill money from the paying bank.