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Training and influences on his career during graduate years at University of Chicago and Yerkes Observatory in the late 1920s. Discussion of science education and the growth of astronomy in China, activities of the Purple Mountain Observatory in Nanking, and Chang's directorship. Effects of the war for Liberation; discussion of astronomy during the Japanese occupation. Other topics include contact with Bart Bok, visits to Yerkes after World War II, and research in astronomy in China.