Dr. Haifeng Liu is a Professor at the School of Mechanical Engineering at Tianjin University. He gained a Master's Degree in Power Machinery and Engineering at Guangxi University. He received his Ph.D. degree in 2011 at Tianjin University, and he was also a joint Ph.D. student at the University of Illinois at Urbana-Champaign from January 2010 to January 2012 and then worked in Tianjin University. He is currently the Vice-Director of the Department of Energy and Power Engineering. To date, he has published more than 200 peer-reviewed papers and has been cited more than 5000 times in Scopus. He is a highly cited scholar in China, and his H-factor is 42 in Scopus. In addition, he has authored 1 US patent and more than 10 Chinese invention patents as the first inventor. Furthermore, He has been awarded by National Awards for Scientific and Technological Progress, Excellent Young Scientists, and Shi Shaoxi Talents Award. He is a member of Working Group 17 (GAS ENGINES) in the International Council on Combustion Engines (CIMAC) and a Fellow in the Engine Session in SAE-China. He is also an Organizing Committee Member and Session Co-Chair of several international conferences, such as ICLASS 2021, the 13th International Green Energy Conference, ILASS-Asia 2020, the 10-12th Asia-Pacific Conference on Combustion, etc. He is also an Editor or Guest Editor of the journals Engineering, Journal of Thermal Science, and Energies.