Dr Mark Shiu-kee SHUM is an Associate Professor of the Faculty of Education in the University of Hong Kong. He is the Director of the Support Centre Using Chinese as the Medium of Instruction in the Faculty. He has been a Chinese language educator for 36 years, teaching Chinese in primary, secondary and tertiary institutions in Hong Kong and overseas. He has published more than 40 papers and 20 books and monographs. His research areas include teaching of writing, application of systemic functional linguistics to Chinese language education, language across the curriculum, medium of instruction and subject specific genres. Professor De-lu ZHANG is now teaching English language and linguistics at the Foreign Languages College, Ocean University of China. He is the Dean of the College, the vice-Chairman of China Stylistics Society, and vice-Chairman of China Language and Semiotics Society. He has been teaching English language for 26 years in colleges and universities in Mainland China and has published more than 80 papers and 15 monographs and textbooks, etc. His research areas include systemic functional linguistics, stylistics, semiotics, discourse analysis, and foreign language teaching.