Gang Wan Professor, doctoral supervisor. In 2006, he graduated from Zhengzhou University of Information Engineering in China with a doctorate degree in Cartography and Geographic Information Engineering. His research interests include virtual geographic environment, spatiotemporal big data, and space environment simulation. He is the chief expert of Space Engineering University, member of the academic committee of the university, member of the teaching committee, deputy director of the State Key Laboratory, deputy director of the Deep Space Remote Sensing and Mapping Working Committee of the Society of Surveying and Mapping, and editorial board member of the "Spacecraft Environmental Engineering".