Qianyi (Sinyee) Lu is a PhD student in Sociology at the University of Illinois at Urbana-Champaign. She received a BA in Economic Statistics from Jinan University and an MA in Sociology from Renmin University of China. She has research and professional experience in demographic analysis, quantitative social science, and population measurement, including serving as a research intern at the United Nations Population Division, where she contributed to mortality estimation and data harmonization for the World Population Prospects. Her current research focuses on income and work-time inequality, population health, and the demographic consequences of labor market stratification, with an emphasis on mortality-relevant health outcomes and cross-national population dynamics. Her previous research examined occupational stratification, family well-being, and social inequality using large-scale survey and census data. Her methodological interests include multilevel and longitudinal modeling, demographic estimation, and comparative population analysis. She is the member of Population Association of America (PAA), American Sociological Association (ASA), Sequence Analysis Association (SAA), Interdisciplinary Association for Population Health Science (IAPHS), and Global Network of Data Officers and Statisticians (GNDOS).