If you see at the merchant where you buy air tickets that there is a cooperation activity with China Construction Bank, and if you can get a discount when you pay with a Dragon Global Payment credit card, then you can also get a discount when you pay with an additional card. The supplementary card is also a global payment card, and you can enjoy the same discounts when paying with the card.
In addition, CCB’s global payment card automatically comes with aviation accident insurance, flight delay insurance and baggage insurance when you buy a ticket, so you don’t have to buy these insurances yourself. You can also enjoy the same benefits when buying tickets with an additional card, but the insured person is yourself. That means you have to use your supplementary card to buy tickets, and you can only use it if you are also a passenger.