Yao (Sara) Han, post-doctoral fellow at Yau Mathematical Sciences Center of Tsinghua University. She had been a Visiting Research Fellow at the Department of Asian Studies of Hebrew University of Jerusalem during February to May 2017 and Visiting Research Fellow at the School of Public Policy and Management of Tsinghua University. She was conferred the Ph.D. degree in Quantitative Social Sciences (Subject: Politics) from University College Dublin in June 2017.