This is a joint credit card of Air China and China Merchants Bank. It has the function of China Merchants Bank credit card, and the lower left corner of the card has the automatically issued Air China membership number. The biggest difference between this card and other credit cards is that the accumulated mileage is 18 yuan, but only when the accumulated mileage exceeds 10000 yuan can you redeem the Air China ticket, and the accumulated points will be cleared by the end of the third year when you use the card.