China astronomer. 19 18 went to Caspian university to study civil architecture and obtained a bachelor's degree. After that, he studied astronomy at the University of Pittsburgh, USA, and 1923 obtained his master's degree. 1926 received his Ph.D. from the lick observatory. 1927 returned to China as a professor at Xiamen university, 1929 as the director of the institute of astronomy of academia sinica. 65438-0955 Professor of Hood College, Maryland, USA, Director of Williams Observatory, retired from 65438-0967. In the years after returning to China from 65438 to 0927, many papers have been published on the ultraviolet radiation of Be-type stars, the spectral changes of Gemini zeta stars, and the photometric study of star spectra. From 65438 to 0929, after being the director of the Astronomical Institute, Nanjing Purple Mountain Observatory was established. From 65438 to 0938, because of War of Resistance against Japanese Aggression, he presided over the relocation of the resident and built the Phoenix Mountain Observatory in the eastern suburb of Kunming.