LI Quan is a Professor of the School of Chinese Studies and Cultural Exchange, Renmin University of China. His research focuses on: Chinese grammar, teaching Chinese as a foreign language, professional development for Chinese language teachers, international Chinese language education. His main works include “Research on Teaching Chinese as a Foreign Language in the New Era: Orientations and Problems”; “A Historical Review of Seventy Years of Teaching Chinese as a Foreign Language in China”; Reflections on Teaching Chinese as a Foreign Language; Explorations in Teaching Chinese as a Foreign Language; A Study on the Patterns of Prototypical Characteristics of Monophthong Adjectives; Study and Analysis of Chinese Grammar.