1. Postdoctoral Fellow, Faculty of Law, Univ. of Hong Kong, 10/F, Cheng Yu Tung Tower, Centennial Campus, Pokfulam Road, Hong Kong, P.R. China.
2. Professor, School of Public Affairs, Zhejiang Univ., No. 866, Yuhang Tang Rd., Hangzhou, Zhejiang 310058, P.R. China (corresponding author).