On October 15th, Prof. Pan presented 2 theme talks during the 22th China Academic Conference on Heating, Ventilation, Air-conditioning & Refrigeration (CAHVAC2020), which are: Data analysis on the multi-scale energy consumption prediciton and efficiency optimization (Methods & Applications on Big-data Forum) Performance driven design - Past and the future of the parametric building analysis tools (Development of Simulation Techs Forum)