The linked account of industrial and commercial credit card is to contact multiple bank cards of the same bank under the user's name. According to relevant public information, the industrial and commercial credit card associated account has a credit card and a savings card in a bank. After the two cards are linked, after the user uses the credit card to make a purchase, as long as the savings card in the associated account has sufficient funds, the repayment can be automatically made. , avoiding late repayments.