1. College of Tourism and Service Management, Nankai University, Tianjin, China
2. International School of Cultural Tourism, Hangzhou City University, Hangzhou, China
3. The College of Geography and Environmental Science, Henan University, Kaifeng, China
4. Visiting Professor of International School of Cultural Tourism, Hangzhou City University, Hangzhou, China
5. Hospitality and Tourism Management, University of Strathclyde, Glasgow, UK