May 14, 2015, XIE Sishen and DONG Guoxuan (director/deputy of the Department of Mathematical Sciences in National Natural Science Fund), and SUN Changpu (Academician) visited the observatory in Delingha.  

   Director YANG Ji introduced the Delinha station. XU Ye, chief of the 13.7m radio telescope, described the development process of the Qinghai observatory, the main scientific tasks, and the implementation of the base funds, etc. Dr.DENG Licai, the research scientist at National Observatory, briefly introduced the progress of the SONG telescope.