The best choice for spending in Dubai is the Great Wall International Card of Bank of China. Great Wall International Card can withdraw money from banks marked with VISA and MASTER or ATMs marked with the same logo in more than 200 countries. The most convenient currency is the US dollar. In addition, I recommend the secrets of overseas credit cards, hoping to help you. ★ When I spend money abroad, there are three columns on the credit card bill-basic amount, tip and total amount (Tota). You can fill in the tip amount in the "tip" column, add it up and fill in the "total amount" column, and finally sign the bill. The total amount is the payment amount. You must confirm it carefully. ★ When spending in the same store, it is recommended to select all the goods to be purchased first, and then pay the bill by swiping the card at one time. It is best not to swipe your card more than twice in the same store. This can easily lead to the acquiring bank rejecting your transaction. ★ When spending by credit card, the merchant will ask you to sign the transaction document. Before signing, you need to check whether the amount is correct. You can't sign until you confirm. The signature on the purchase order should be the same as the name and handwriting of the credit card. In addition, don't sign a blank or incomplete bill. Please confirm whether there are two overlapping bills and try not to let the card leave your sight. ★ When you swipe your card abroad, please pay attention to the currency of the purchase order. For example, the value of yen 1 yuan is far from that of dollar 1 yuan.