On the morning of Jan. 05, 2015, researcher Wang Xiaoya from Center for Astro-geodynamics Research, Shanghai Astronomical Observatory, and associate researcher Dr. Xu Tianhe from Xi’an Research Institute of Surveying and Mapping visited NTSC at invitation for exchange and gave academic reports respectively. More than 20 people, including researchers Li Zhigang and Gao Yuping, relevant scientific research personnel and graduates of NTSC, attended the seminar held in the academic hall on the third floor of research activities building of NTSC.

       The seminar was hosted by researcher Yang Xuhai of NTSC. On the seminar, the participants had lively exchange and discussion about the report content, and both the experts patiently answered participants’questions of great concern.