The suggestions for new applications can be used normally and reasonably, and you can apply for an increase later. If it is a dual-currency card, if you swipe the card twice overseas such as Hong Kong, regardless of the amount, it is very likely that the temporary limit will be increased for you. This limit is generally valid for two months, and you can use it in the mainland. Special overseas limits are generally not specially set, nor are they specific to the new card you just opened. Therefore, if you have time, you can use it normally. You can use it at the supermarket, repay it normally, and occasionally make installments to let the bank earn some interest. The limit will naturally increase in three and a half months.