To see hong kong

It is a pity that you still need to apply one since you have a pakistan passport.
You need to apply in advance because there is no VOA in HK. For applying, you need to provide the application form with recent taken photo, round trip tickets, the hotel booking confirmations, your bank statement & proof employment (if any), proof of the proposed visit to Hong Kong and your itinerary in HK (if any) for applying.