Bai, Jiangtao, Xi’an Map Publishing House Co., LTD. Institute of Historical Geography, Yunnan University Key Laboratory of Digital Humanities Technology R&D and Application, Department of Education of Yunnan Province (China)
Bai, Xuguang, Tourism College of Beijing Union University (China)
Bei, Yulei, Communication University of China (China)
Bi, Yuan, Guangzhou College of Technology and Business (China)
Bian, Haining, Beijing Polytechnic (China)

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