✔ 最佳答案
1) If you born in Hong Kong, you can get it immediate after you apply in the internet, just tell the staff application no, after 3 minutes, you can get it. I try 3 times in Hong Kong Airport. and also help my family member to get it at this way.
2) If you are not born in Hong Kong, (e.g China). first time apply, need around 3-4 weeks.
After that, next time you apply visa, you can use the above 1). method.
havea nice trip!