The Hong Kong Homeschool Meetup Group: http://www.meetup.com/hongkong-homeschool/
The Meetup group is for families with children ages 3 and up who are currently homeschooling and are already living in Hong Kong. The group gets together several times each month. If your child isn't yet 3 or if you don't yet live in Hong Kong, you can contact the admins with questions, but you can't actually join the group until you meet those 2 criteria.
When you apply to be a member, you will be given information on how to attend one of the monthly parent coffee nights so that an admin can meet you in person.