Commemoration of the Founding of the Observatoryat the Phenix Mountain in Kunming at Its 70^th Anniversary

As the 70th anniversary of the founding of the observatory at the Phenix Mountain in Kunming(now the Yunnan Observatory) approaches, the author presents this paper to describe and clarify some issues with regard to the history of the observatory based on official documents.In addition, the earlier research of sunspots at the observatory which the author has participated in is briefly narrated to commemorate the founding of the observatory.