Dr. Yan Cheng graduated with a B.Sc. in the Department of Geography from Hebei Normal University. She received her M.S. in Environmental Science from the Institute of Earth Environment, Chinese Academy of Science, in 2002 and her Ph.D. in 2007 from the Hong Kong Polytechnic University. From 2017 to 2018, she was a visiting scholar at Queensland University of Technology. She is currently a professor at the School of Human Settlements and Civil Engineering at Xi’an Jiaotong University. She is a member of the Chinese Society of Particulogy’s committee on aerosol. She was awarded the Chinese Young Aerosol Scientist Award in 2015 and the Outstanding Instructor Award of Xi’an Jiaotong University in 2014. She was the deputy editor of the SCI Journal of Indoor and Built Environment. She has over 20 years of experience in conducting air quality studies. She has been the principal investigator in several indoor and outdoor air quality research studies in Hong Kong and mainland China. These include two general projects from the National Natural Science Foundation of China (NSFC). Her research interests include physicochemical characterization, source analysis, and causal analysis of air pollutants, and source emission factors.