Xu Canghuo is vice director and assistant professor in the Department of Chinese as a Foreign Language, College of International Education, Nanjing Normal University, member of World Chinese Teaching Committee, and core member of Hanban Children HSK Research and Development Group of Nanjing Normal University. His research focuses on modern Chinese grammar and teaching Chinese as a foreign language. He has hosted two projects of the Ministry of Education of Jiangsu Province, and has published three monographs in teaching Chinese as a foreign language and near 20 papers in journals such as Chinese Study, Language Teaching and Linguistic Studies, etc.