The normal BOC credit card is one yuan (except wholesale merchants), but the points of BOC Air China audio card are automatically converted into Air China mileage (in proportion), and then the bank will give you 50% of the consumption amount and accumulate it into your credit card points account. If you spend 1000 yuan, 1000 points will be converted into Air China miles, and then the bank will give you 500 points, which should be the points in the points account you found. In addition to the card number, there is also a string of numbers on the credit card, which should be your Air China membership number. You can call Air China's customer service to find out how many miles you have. There may be a discount on flying.