1. College of Urban and Rural Development, Beijing University of Agriculture, Beijing, China;
2. Business School, Beijing Wui Zi University, Beijing, China;
3. School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an, China;
4. College of Architecture and Urban Planning, Beijing University of Technology, Beijing, China;
5. Beijing Engineering Research Center of Historic Buildings Protection, Beijing, China;
6. College of Architecture and Civil Engineering, Beijing University of Technology, Beijing, China