中文摘要：

Guo Yingzhi, Ph.D., professor, Department of Tourism, Fudan University. Correspondence concerning this article should be addressed to Guo Yingzhi, Department of Tourism, Fudan University, Shanghai 200433, China. Email： yingzhig@hotmail.com; yingzhig@fudan.edu.cn. Hu Tian, Ph.D. candidate, Department of Tourism, Fudan University. Huang Jianfeng, Ph.D, candidate, Department of Tourism, Fudan University. Dong Kun, Ph.D. candidate, Department of Tourism, Fudan University.