China Southern Airlines is an airline based in Guangzhou in the Guangdong province of the People's Republic of China operating domestic, regional and international services.China Southern is the world's 7th largest airline by passenger carried in 2007, and Asia's largest airline in terms of fleet size, the largest in Asia in passengers carried, also the 7th busiest in domestic passenger traffic and the 7th largest in scheduled domestic passenger-kilometres flown worldwide. China Southern is the largest in the People's Republic of China in terms of passengers carried. China Southern carries more domestic cargo than any other airline. It is a member of the SkyTeam airline alliance.