May 13, 2017, Jiangsu colleges and universities Geography Graduate Forum held at Hehai University，There are about 300 experts, scholars and representatives of graduate students. from Nanjing normal University, Hehai University, Nanjing Institute of Geography and Lakes of Chinese Academy of Sciences, etc. attended the forum.

The purpose of the Forum is to provide a wide range and multi-field academic exchange platform for graduate students in order to broaden academic horizons, activate scientific research thinking, stimulate research enthusiasm, and improve innovation ability. To realize the organic coordination and benign interaction among the graduate students in various colleges and universities. Professor  Linwang, Yuan gave a presentation on the topic of Mathematics and Geography: Mapping and Reconstruction.