Dr. Qingchun Lei received his B.Sc. and M.Sc. degrees in thermal engineering at the University of Science and Technology, Beijing, in 2010 and 2013, and his Ph.D. in mechanical engineering at Virginia Tech, USA, in 2016. He is a tenured associate professor and a special researcher at the School of Power and Energy, Northwestern Polytechnical University. His research interests mainly focus on rocket plume diagnostics, combustion diagnostics, combustion and detonation, and advanced optical measurement methods.