Answer 1: Credit card bills are not based on the calendar month of each month, but on the billing date. The amount to be repaid on September 6 is: the amount consumed between July 19 and August 17 (this monthly bill will be issued on August 18 for you to repay before September 6); and so on, in October The amount to be repaid on the 6th is: the consumption from August 19th to September 17th (the monthly bill will be issued on September 18th for you to pay before October 6th).

Answer 2: The 18th day of the bill is the 18th day of the previous month, and the 6th day of the repayment is the 6th day of the month after the 18th. That is, the bill will be given to you on August 18th and September 6th. You are asked to repay the bill, and the bill states the details of last month's consumption. For examples, please refer to answer 1.

Answer 3: There is a difference. The mother card is the main card and the daughter card is the supplementary card. For example, if the limit is 10,000 yuan and you spend 5,000 yuan with the main card, there will be 5,000 yuan left on the sub-card, and vice versa. In other words, their quotas are integrated and not independent.

Answer 4: If you swipe any one of the mother and child cards 3 times or swipe both cards cumulatively 3 times, the annual fee will be waived; the child cards are bound to the mother card, and they only have one bill. The consumption of both cards will be on the same bill; you can pay back to either card. That is to say, no matter which card is used for consumption, you can use one of them to repay at will.