Zheng Long is currently a research follow in the Institue of Operations Research and Analytics for SIA-NUS Digital Aviation Corp Lab. He holds PhD (building science) and master (building performance and sustainability) degrees from the National University of Singapore with the background of air conditioning and mechanical ventilation. Before studying and working in NUS, he otained master and bachelor degrees from Chongqing University, China. His research interest includes Computational Fluid Dynamics, Indoor Built Environment and Building Physics. During his free time, he enjoys coffee, reading, and voluntary activities.