Hello,
I am not from HK but came across this discussion with interest. I have a PPL and interested to finalize in Canada I did the same research and Langley is the most favorable for the requirements I was interested in, however the con is that the school does not provide in-house/campus accommodation as a student that is your responsibility.
Be prepared to live in neighboring towns like Surrey, and Burnaby (among others) for proximity (public bus lines, train etc) and affordability (housing) as Langley can be pricey.
Also as much as it's indicated on their website that they organize airport transfer that is not completely accurate so do be prepared to organize your own transfers as well as accommodation in a hotel ($100) if you haven't secured one prior to arriving.
Other than that it seems to be a promising school, and looking forward to the experience and flying. Any one who has received a different experience kindly share this will aid in research.
Happy Landings