Professor He’s research has focused on energy systems engineering and strategic and policy responses to global climate change, with particular emphasis on low-carbon development pathways, energy transition modelling, and climate governance. Through sustained research and participation in national strategic consulting and international collaborative programmes, he has contributed to the analysis of China’s energy transition and climate policy, including research supporting strategies for carbon peaking and carbon neutrality. His work has integrated quantitative energy-system analysis with economic and policy considerations, providing a basis for assessing alternative pathways for low-carbon development and energy transformation. He has authored numerous peer-reviewed publications and policy reports and has contributed to national and international discussions on sustainable development and green transformation. Through long-term research, leadership of major national research programmes, and service on policy advisory bodies, Professor He has contributed to connecting systems-oriented energy research with practical questions of energy security, climate mitigation, and sustainable economic development.