She was born in China and studied telecommunication and English at Beijing Post and Telecommunication University (北京邮电大学). She has an MA in Applied Linguistics from Beijing Normal University and was the first doctoral student of the late Professor Qian Yuan (钱瑗), the daughter of the well known Chinese scholars and writers Qian Zhongshu (钱锺书) and Yang Jiang (杨绛). She later obtained her PhD in Speech Sciences from Newcastle University in Britain.
Her research spans over cross-linguistic studies of child language acquisition, speech and language disorders of young children, pragmatics, multilingualism, and intercultural communication. She is author of Phonological Development in Specific Context (2002), and editor of Phonological Development and Disorder (with Barbara Dodd, 2006), Language Teaching/Learning as Social Inter-Action (with Paul Seedhouse, Li Wei and Vivian Cook, 2007), and The Language and Intercultural Communication Reader (2011). She is also one of the authors of the clinical assessment DEAP: Diagnostic Evaluation of Articulation and Phonology. She has been reviews editor of The International Journal of Bilingualism (Sage) and is the forum and reviews editor of Applied Linguistics (OUP). She worked as Sir James Knott Post-Doctoral Research Fellow, Lecturer and Senior Lecturer at Newcastle University, Reader at Birkbeck, and has held visiting and honorary professorships in a number of Australian and Chinese universities. She is the first Chinese-born woman linguist to be made a full professor in a British university. She was elected Fellow of the Academy of Social Sciences, UK, in 2019.