I used my breast friend pillow for my first and really liked it. It has really good support. I'm not sure where to get one in HK, B2B might be your best bet to find it.
I am selling a secondhand (but in good condition) My Breast Friend pillow. Its on this website in the classifieds section. I loved it for BF'ing my baby. Let me know if you are interested. I am in DB but can meet in Central.