On the afternoon of December 2nd, Professor Li Hui, Professor Li Bofeng, Professor Hao Tong, and Associate Professor Dai Chaomeng of Tongji University were invited to give online special academic reports to the teachers and students of the School of Architecture and Civil Engineering. The reports were divided into two groups and conducted simultaneously. They were presided over by Luo Chunyong, dean of the school, and Liu Lianglin, vice dean. Nearly 100 teachers and students from the school attended the meeting.

The first group of reports were "Research and Application of Ecological Road Permeable Pavement Technology" brought by Professor Li Hui from the School of Transportation Engineering of Tongji University, and "Key Technologies for Satellite High-precision Positioning" by Professor Li Bofeng from the School of Surveying and Geoinformation of Tongji University. Professor Li Hui took the concept, policy and technical system of sponge city as the starting point, and pointed out that the construction of sponge city has been a national strategy. He introduced the  background of his research on the permeable paving technology of ecological road. Through campus and regional cases, he provided a comprehensive and in-depth analysis of material development, structural design, intelligent construction and current applications, and depicted a clear picture of permeable paving from technology development to promotion and application. Professor Li Bofeng introduced the background and current situation of GNSS in three aspects: " the development opportunities of GNSS", "the development of application technology of GNSS", and "the challenges of application of high-precision RTK and its key technologies". Then he explained "Observation Methods", "Differential Positioning and RTK Technology", "Network RTK Technology" in a simple way. Finally, he analyzed the severe challenges faced by the GNSS system and its countermeasures , and expressed his belief that through the joint efforts of scientific researchers, our country will surely make rapid technological progress in the optimization of GNSS system and other aspects in the future. Participants were deeply inspired, and interacted enthusiastically and actively with the two professors .

The second group of reports are "Progress in Groundwater Safety Research" brought by Associate Professor Dai Chaomeng from the School of Civil Engineering, Tongji University, and "Enhanced Exploration and Provrssing of Underground Infrastructure and Polar Subglacial Structures" by Professor Hao Tong from the School of Surveying, Mapping and Geoinformatics, Tongji University. Associate Professor Dai Chaomeng introduced the forms of groundwater safety as well as domestic and foreign laws, regulations and standards on groundwater safety. Then he carded the research progress and direction of groundwater pollution, and systematically introduced the relevant research results of his research group. Finally he focused on the important application of numerical simulation methods in related research. Professor Hao Tong briefly introduced the current status of underground infrastructure detection in my country, and the recent work of Tongji group in complex medium enhanced detection and intelligent interpretation, including the use of electromagnetic impedance matching to enhance the detection depth of ground penetrating radar, the development of joint time-frequency analysis methods and his application in radar image processing, and the establishment of wireless sensor network channel models in underground media. Finally, combining with the 36th Antarctic scientific expedition experience and focusing on how to apply scientific research in the laboratory to major national application requirements, he introduced the first flight test of the UAV ice-detecting radar in Antarctica, the new method of exploring Antarctica, and the research on supporting the balance of Antarctic ice sheet, such as the development of new methods for radar processing of Antarctic subglacial lakes. After the meeting, the teachers and students participating in the report had active and enthusiastic exchanges with the two professors.