Prof. Yan, Tenured Professor, School of Architecture, Tsinghua University. Editor-in-chief of International SCI journal Building Simulation. Section Editor of International SCI journal Energy and Buildings. Chair of China HVAC Society’s Building Simulation Committee. Chair of International Building Performance Simulation Association China Affiliation (IBPSA-China). Fellow of IBPSA. Editorial Board Member of International SCI Journal of Building Performance Simulation and Buildings. Mainly devoted into development of building performance simulation, research on quantitative description of occupant behavior and low-carbon energy-saving technology in buildings.