The number of credit cards depends on the credit card itself and your expectations. The credit card itself needs to be activated before it can be used If the credit card meets your expectations, you only need one card. If the credit card can't meet the expectation, you need another card to supplement it, because the credit card itself is not fixed, and it is determined according to the customer's comprehensive score. I suggest you do more cards and less activation, and try to do it four times a month. There is no annual fee if the credit card is not activated. In addition, I warn you that the issuing bank may send you some tempting information to induce you to activate the card. In fact, that information is just too much and too little, just to see if you need it. I hope I can help you, please adopt it.