1. VR/AR+ Education Lab, School of Educational Technology, Faculty of Education, Beijing Normal University, Beijing, People’s Republic of China
2. Beijing Advanced Innovation Center for Future Education, Beijing Normal University, People’s Republic of China
3. Research Center of Distance Education, Beijing Normal University, People’s Republic of China
4. Department of Teaching and Learning, Peabody College of Education and Human Development, Vanderbilt University, Nashville, TN, USA