Currently, Chang Jiang Scholar,Director of the Key Laboratory of Thermal Science and Power Engineering, Ministry of Education and Executive Director of the Laboratory for Low Carbon Energy, Tsinghua University. Co-Author of over 200 journal papers and two books and two textbooks on combustion and clean coal technology. Holds more than 20 Chinese patents in clean coal combustion and air pollution control. Research interests: energy science and technology, especially low-carbon energy; combustion theory and technology, especially pulverized coal combustion; clean coal technology; combustion emission and its control, especially the formation and control of PM2.5; solid fuels and waste to energy; biomass energy and solar thermal energy.