Laurence Roulleau-Berger is Research Director Emeritus at CNRS (Centre National de la Recherche Scientifique), PhD Supervisor in Sociology, Triangle, ENS (École Normale Supérieure), Lyon, France. Wen Jun is Professor of Sociology and Social Work, Head of the Institute of Sociology, and Dean of the School of Social Development at East China Normal University, China, and Co- Director of the NYU- ECNU Institute for Social Development at New York University, Shanghai, China.