1. Department of Sociology, School of Philosophy and Sociology, Jilin University, Changchun, China
2. Northeast Revitalization & Development Institute of Jilin University, Changchun, China
3. Department of Social Work and Social Policy, School of Sociology and Population Studies, Renmin University of China, Beijing, China
4. Research Institute of Social Construction of Beijing, Renmin University of China, Beijing, China
5. Sau Po Centre on Ageing, The University of Hong Kong, Hong Kong, China