On the afternoon of May 6th, 2020, at 14:00- 18:00, our college organized a presentation of seven graduate dissertations of grade 20 18 on Tencent conference platform, which was divided into two groups: doctoral students and master students. The researcher of the Institute of Geography of China Academy of Sciences is the leader of the expert group, and Professor Zhu, Professor Xie and Professor Xiao Wenhai of our school are members of the doctoral program open group. The founding members of the master's degree group include Xie, Professor Xiao Wenhai, Associate Professor, Associate Professor Yao Guanrong, Doctor, Doctor and Dr. He Yafen, and invited Professor Ling, an expert from the teaching supervision group of the graduate school, to give online guidance. Postgraduates of other grades also participated in the whole process of opening the topic.