If your study visa will expire in 4 weeks, you are required to apply for 'Extension of Stay' at the Immigration Department. For details, please visit the website of the Immigration Department at:
If you need to re-apply your study visa (i.e. your current limit of stay has expired), please prepare the Application form ID 995A and the required documents, which can be downloaded at:
www.cuhk.edu.hk/osa/lces/usefulinformation.html, and send them to the Learning and Cultural Enhancement Section, Office of Student Affairs for further processing.
For both applications, you are required to submit a certifying letter issued by the Registration and Examinations Section. You may apply online athttps://rgsntl.rgs.cuhk.edu.hk/rws_prd_life/rws_appl/appf_crtltr_ug.asp