他以毕生的精力，从事于我国古代历算学的整理和阐发，同时也对西洋科学加以研究和介绍。
Do not Um, Xuancheng people. His life energy, engaged in the ancient Chinese calendar and elucidation of finishing school, but also to the study and introduction of Western science.
他以毕生的精力，从事于我国古代历算学的整理和阐发，同时也对西洋科学加以研究和介绍。
Do not Um, Xuancheng people. His life energy, engaged in the ancient Chinese calendar and elucidation of finishing school, but also to the study and introduction of Western science.
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