SemiCreditCard: In the traditional sense, a quasi-credit card means that the cardholder must deposit a certain amount of reserve fund according to the requirements of the issuing bank. When the balance of the reserve fund account is insufficient to pay, he can overdraw within the credit limit specified by the issuing bank, but the overdraft part will be charged with interest from the overdraft date and will not enjoy the interest-free period. In recent years, some banks have introduced new quasi-credit cards, which not only do not need to pay a reserve fund when applying, but also enjoy an interest-free period like credit cards. This new generation of quasi-credit card combines the advantages of credit card and debit card, which can be used as a credit card and enjoy interest-free period when overdrawn, and has many functions of debit card, such as calculating interest for overdue repayment, exempting fees for peer deposits and withdrawals, peer and inter-bank transfers, etc. , similar to enhanced credit cards. This new quasi-credit card, represented by the Great Wall (GSM) series of credit cards issued by Bank of China, is nominally a quasi-credit card, but it is quite different from the traditional quasi-credit card.