Zhang Lihong. Doctor in engineering. Lecturer of the College of Energy and Power Engineering at North China University of Water Resources and Electric Power. The main research directions are the research and development of fluid machinery for residual energy recovery, the design and optimization of pump turbines. Participated in 2 National Natural Science Foundation projects and 1 provincial-level talent introduction project, published multiple papers. Undertake undergraduate courses such as “Science and Technology Literature Retrieval and Paper Writing”, “Pumps and Fans”, “Engineering Fluid Mechanics”and “Frontiers of Hydroelectric Technology”.