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Bu Cheng started working at the Department of Civil Engineering after graduating in 1965 and was later stransferred to the Department of Environmental Engineering (DEE). He was the Council Chairman of DEE, responsible for the CPC party affairs, administration management and student affairs. He engaged in teaching and research at DEE's Division of Water Supply and Drainage. His research interests included water treatment engineering, water supply and drainge of buildings, pipeline engineering, pumping station design and sewage reuse technology, research and development of equipment, exploration and design of water treatment plant and water supply projects. He retired as a professor in 1999.