What does the starting ticket of China Southern Airlines 784 mean?

China Southern Airlines code. According to the query of China Southern Airlines official website, the ticket number of China Southern Airlines e-ticket consists of 13 digits beginning with 784. The first three digits are airline codes, and the last 10 digits are random numbers. The airline codes are all the identification codes assigned to airlines after IATA coordinated entry into BSP. China Southern Airlines is China Southern Airlines, one of the three state-owned airlines in China, and the largest airline in China. Each airline's ticket has three Arabic numerals at the beginning. For example, the ticket of China Southern Airlines starts with 784, and its waybill also starts with 784.