Prof. Jianjun Xia’s areas of expertise include national policy study, energy planning, industrial waste heat utilisation for heating, and building energy systems. He is the deputy director of the Tsinghua Building Energy research centre. He is a member of the Executive Committee (ExCo) and representative for China of IEA District Heating and Cooling TCP (IEA-DHC). He is also a member of the China District Heating Association Scientific Committee. He serves as an associate editor for the international journal “Building Simulation”. He is the author or co-author of five books and more than 100 scientific papers.