At the same time, there are multiple CCB credit card master cards (multiple credit card accounts), so they share a maximum amount.

For example, a card 50 thousand, b card 3000,

When A card is used between 47,000 and 50,000, the amount that B card can use is 50,000 minus the amount used by A card.

For example, A card costs 49,000 yuan, and B card can use 1000 yuan.

When the number of A cards is less than 47,000, all B cards can use 3,000.

In other words, the maximum sum of two cards is 50,000, not 53,000, and the A card does not exceed 3,000.

If the landlord has other questions, you can ask.