Ms Li has been teaching Putonghua for a number of educational institutions since 1994. As a lecturer of Putonghua for public servants, she is currently providing training programmes for Administrative officers (AO), executive officers (EO), the Hong Kong Police Force, the Correctional Services Department, the Immigration Department and the Food and Health Bureau. Ms. Lee is an experienced examiner for the National Putonghua Proficiency Test. She is particularly experienced in teaching Putonghua to Cantonese speakers, and has designed Putonghua teaching materials for the Hong Kong Institute of Human Resource Management, the Standard Charted Bank, the Hang Seng School of Commerce and the Hang Seng Management College.

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