Professor Quanbao Jiang was a visiting scholar at the Paul and Marcia Wythes Center on Contemporary China from 2017 to 18. His general research interests include demographic analysis and public policy, in addition to sex structure imbalance and its consequences. During his academic visit, he examined the decline in China’s fertility level, including the quantum effect (measured by marital fertility rate) and the tempo effect (measured by age-specific marriage proportion), using decomposition methods and devised a decomposition formula for the decline in fertility during the past several decades, in addition to sex structure and age composition. Additionally, he examined to what extent sex-selective abortion contributes to China’s high sex ratio using Bayesian analysis. He received his Ph.D. in Management Science and Engineering at the Xi’an Jiaotong University in 2006.