Ms Ko received her BA in Chinese Literature from Chinese People University and MA in Applied Linguistics from Beijing Normal University. Specialized in Chinese Linguistics and Cantonese/Putonghua contrast studies, she has taught Putonghua, University Chinese and phonetic related module in different universities in Hong Kong including HKIED, CityUHK and BUHK; additionally, she has more than 20 years experiences in teaching Chinese as Foreign Language in varies famous firms and companies in Hong Kong, including Morgan Stanley, MTR, Grant Hyatt etc.