Lu Jianming, professor and doctoral supervisor of Beijing University, specializes in modern Chinese sentence structures, Chinese function words, TCSOL, Chinese information processing and teaching Chinese in middle schools. He is a member of the Advisory Committee of National Language Committee of China and has served as president of the International Association for the Chinese Language, president of the World Institute of Chinese Language Teaching and other associations. He is honored by the academic circle as one of the eight best scholars on modern Chinese grammar in the 20th century.Ma Zhen, professor of Beijing University, specializes in modern Chinese, especially function words. She has published 16 academic works written independently or cooperatively, including textbooks and dictionaries. She has published over 50 academic papers.