◎ Ping-cheng T'ung was Senior Lecturer in Chinese at the School of Oriental and African Studies, University of London, where he taught from 1963 until retirement, and from 1990-2005 he was Vice-president of the International Society for Chinese Language Teaching. He is the co-author (with D.E. Pollard) of Colloquial Chinese.
◎ Hugh D.R. Baker is Professor Emeritus of Chinese in the University of London. His publications include Teach Yourself Cantonese (co-authored with P.K. Ho), Chinese Family and Kinship, and many other books and articles on Chinese and Hong Kong society.
