1. Ph.D. Candidate, Dept. of Building and Real Estate, Faculty of Construction and Environment, Hong Kong Polytechnic Univ., Hung Hom, Kowloon, Hong Kong, China (corresponding author).
2. Professor and Associate Dean (Partnership), Dept. of Building and Real Estate, Faculty of Construction and Environment, Hong Kong Polytechnic Univ., Hung Hom, Kowloon, Hong Kong, China.