1. Assistant Professor, Dept. of Public Administration, School of Law, Hunan Univ., No. 2 Lushan Rd., Changsha 410082, China (corresponding author).
2. Professor, Dept. of Building and Real Estate, Hong Kong Polytechnic Univ., Hung Hom, Kowloon, Hong Kong.
3. Research Fellow, Dept. of Building and Real Estate, Hong Kong Polytechnic Univ., Hung Hom, Kowloon, Hong Kong.