Just wondering which area in character design you are seeking ?
Cause there are a lot of areas that relate to character design , such as concept , 2d and 3d character artist etc . Honestly I'm not quite sure if that there is a school in Hong Kong that suits your aim . Seriously if you want to be a successful character artist then buy or download books or dvd from internet .
Here is the link that you can look at it , it may not help you out in seeking the aim you want but kind of give you an inspiration .
http://www.comiconchallenge.com/2011/spot_parnell.php