1. College of Humanities & Social Development, Nanjing Agriculture University, Nanjing, People’s Republic of China
2. Center for Tourism Planning and Research, Sun Yat-sen University, Guangzhou, People’s Republic of China
3. School of Geography and Planning, Sun Yat-sen University, Guangzhou, People’s Republic of China
4. School of Tourism Management, South China Normal University, Guangzhou, People’s Republic of China