As long as you have no bad record in the bank, you can apply. The specific amount will be determined by the bank based on your credit status. For example, your education, work situation, housing and other property conditions, etc. This mainly tests your repayment ability. Suppose you give a beggar a limit of 1 million. If he overdrafts, how do you ask him to repay it? Isn’t it true that the bank is losing money? The limit set must take into account the risk of repayment. General activities include giving away points, gifts, etc., and some merchants offer discounts by swiping your card. For example, through the merchant store I use, you can buy tickets at half price in some theaters. The specific suggestion is to check the website of the relevant bank. They have a detailed introduction and there are different cards to choose from. According to people around me, China Merchants Bank has more, you can go and compare.