Yifeng Yao, Professor, the College of Geography, Nanjing Normal UniversityEducation experiences: Ph.D in Quaternary geology at Nanjing University. Master Degree in Landscape Architecture at Beijing Forestry University. Bachelor Degree in Landscape Architecture at Nanjing Forestry University.Twice obtained Germany DAAD (the Germany International Academic Exchange Service) Scholarship, as a Visiting Scholar at Urban History Institute of RWTH Aachen University and Geography Institute of Giessen University, Germany. Main research direction and fields: historical city preservation, landscape planning, human geography.