我们专业也不需要交推荐信，可能大家都知道推荐信很水所以都不看了吧，哈哈！

Please note that you do NOT need to attach or send in academic/professional referees’ reports for your application for admission to MSc(CompSc) curriculum in the Faculty unless requested. If you still wish to provide us a reference letter, you may upload it via the online application system.

推荐信具体要看学院要求，以上是Computer Science的，意思是不需要提供推荐信，如果你执意要提供可以在online application system 上传。具体要求可以参考以下网站的supporting document.
http://www.aal.hku.hk/tpg/programme-list-1819