Fang Zhang^1,2, Qiang Zhi^2,3, Blas Pérez Henríquez⁴ and Jun SU⁵, (1)Tufts University, (2)Tsinghua University, (3)Belfer Center for Science and International Affairs, Harvard Kennedy School, Harvard University, Cambridge, MA 02138, USA;, (4)Center for Environmental Public Policy, Goldman School of Public Policy, University of California, Berkeley, (5)School of Public Policy and Management,Tsinghua University