Among the co-branded credit cards of China Southern Airlines, it is the most cost-effective to exchange mileage with consumption points for GDB cards and BOC cards. Gold cards are all 14 yuan = 1 km, and they all come with accident insurance. Compared with the two, Guangfa Bank has more activities and it is relatively easy to increase the credit line. People in Guangzhou, of course, the first choice of China Southern Airlines and Guangfa, the right time and the right place.