Hong Kong MUG
From MythTV Official Wiki
HK MythTV User Group
TV schedules
There isn't a native xmltv grabber for HK. Nor is there a linux program that does it. However there is a schedule grabber called TVxb that can do it. http://www.tvxb.com
TVxb is a windows program but can be run in linux through wine. To use it, grab the apropriate INI file from the website then:
wine TVxb.exe -No Console
mythfilldatabase --file 1 -1 /path/to/output.xml