Qixin Cai is a PhD candidate at Renmin University of China. He holds an M.P.A. (Social Welfare) from the University of Macau in Macao SAR, China, and has previous experience in administrative, teaching, and research roles at the University of Macau. His research interests encompass Population Aging, Social Policy, Child Welfare, Poverty, and Longitudinal Data. Currently, he is dedicated to employing interdisciplinary approaches to explore various aspects of population aging and health in Low- and Middle-Income Countries (LMICs), aiming to provide valuable insights for policymakers. Furthermore, Qixin is recognized as an IPL Expert in areas such as Health and Wellbeing, Social Policy, and Social Protection, affiliated with the UNESCO Inclusive Policy Lab. He is also a member of the Collaborative for Innovation in Data and Measurement on Aging (CIDMA) Network in the NIA P30 Centers at The University of Chicago and Duke University. Additionally, Qixin has taken on the role of PI in two ongoing research projects. The first project, titled “Intergenerational Reciprocity, Old-age Poverty Risks, and Subjective Well-being from the Perspective of Family Structure: Findings from three longitudinal cohort studies in middle-income countries (MICs),” is funded by the China Scholarship Council. The second project, “The Impact of Parental Migration on the Health of School-Aged Left-behind Children,” is funded by the Research Funds of Renmin University of China.