Zhai Yan is a professor in the Research Institute of International Chinese Language Education, Beijing Language and Culture University. In 1998, she won the second prize of the National Excellent Teaching of Chinese as a Foreign Language Award and the first prize of Beijing Higher Education Teaching Achievements in 2012. Her research mainly focuses on the methodology of teaching Chinese as a second language, language acquisition and testing. Professor Zhai has published many papers, including An Objective Study on the Subjective Criteria of Speaking Fluency, and a monograph, Spoken Chinese: From Teaching to Testing and has participated in the compilation of many Chinese teaching textbooks, among which Short-term Spoken Chinese Threshold (2nd Edition) has been selected as the National Planning Textbook in the 11th Five-Year Plan of General Higher Education of the Ministry of Education.

Su Yingxia, professor of Beijing Language and Culture University, was a Visiting Professor of Tokyo University of Foreign Studies and acted as a Chinese President of Confucius Institute at Keimyung University in Korea. She got the title of Beijing Language and Culture University Prominent Teacher in 2012, whose research areas include teaching Chinese vocabulary and grammar to non-native speakers. Professor Su has published many papers in such academic journals as Linguistic Research, Chinese Language Learning, and Journal of International Chinese Teaching, edited a series of textbooks such as YCT Standard Course and Read for Joy-An International Chinese Reading, and participated in editing Short-term Spoken Chinese Threshold (2nd Edition), which was selected as the National Planning Textbook in the 11th Five-Year Plan of General Higher Education of the Ministry of Education.