His research interest focuses on Chinese computing, database and information retrieval. He has published over 250 technical papers in these areas in different international journals and conferences and books. He is a member of the ACM, Senior Member of IEEE as well as Fellow of BCS (UK), IET (UK) and HKIE. He is the founding Editor-In-Chief of ACM Transactions on Asian Language Processing (TALIP), and serves as associate editor of International Journal on Computational Linguistics and Chinese Language Processing. He was the Conference Co-Chair of NDBC2016 (Shenzhen), BigComp2016 (Hong Kong), NLPCC2015 (Nancheng) and IJCNLP2011 (Thailand); the Finance Chair SIGMOD2007 (Beijing); the PC Cochair of lJCNLP2006 (Jeju, Korea); and the Local Organization Chair of EMNLPIJCNLP’2019 (Hong Kong). Also, he is the General Chair of the AACL-IJCNLP’2020 (Suzhou). Also he is a Programme Committee member of many international conferences. He was awarded by the HKSAR Government Medal of Honour (MH) for his contribution to information technology development in Hong Kong in 2011, by the Shenzhen Innovation technology Council “Virtual University Campus Outstanding Project Investigator Honor Certificate” and by the Hong Kong Scout Association, the Medal of Long Services in 2013.