Lei got a PhD degree in Fluid Machinery and Mechanical Engineering from Beihang University in Beijing, China and studied as a visiting scholar in Department of Engineering Science at University of Auckland in 2013. Since his PhD studies in 2007, he has been focused on turbine design and performance optimisation, and now particularly in aerodynamic design and optimisation and stress & rotor dynamics analysis of radial inflow and axial turbines. Currently, he is a Research Engineer at Heavy Engineering Research Association and leading the turbine development team for Organic Rankine Cycle (ORC) system to produce power from low enthalpy geothermal energy and industrial waste heat.