See this:
http://www.pae.cuhk.edu.hk/staff.htm
It lists Dr. Chan's email as
henrychan@cuhk.edu.hk but it is a couple of years old.
This page:
http://hongkong.angloinfo.com/afdetail.asp?Rec=4942
lists an address for his office and a phone number. I just don't know how accurate they are.
Missy