Among the China Southern Airlines co-branded credit cards, China Guangfa Card and Bank of China Card are the most cost-effective for exchanging consumption points for miles. The Gold Card is 14 yuan = 1 kilometer of mileage, and both come with accident insurance. Comparing the two, China Guangfa Bank has more activities and it is relatively easy to increase its credit limit. If you are in Guangzhou, of course China Southern Airlines and Guangfa are your first choices. They have the right time, place and people.