Fig. 1From: Report on the 18th International Symposium on Geo-disaster Reduction and the 4th Gu Dezhen Lecture, 20–22 November 2020, Beijing, ChinaOpening speech hosted by Prof. Shengwen Qi (a) and presented by Dr. Xiaonan Duan (b), Prof. Jiyang Wang (c), Prof. Huiming Tang (d), Prof. Qingyun Di (e) and Prof. Fawu Wang (f)Back to article page