I have a regular Pakistani Passport, am I exempted from Visa?

Hi, I have a regular Pakistani Passport as regular citizen, am I exempted for my Visa Fee for China and Hong Kong? (Actually, you have written official Pakistani passport, so I am getting confused here).. If so, Do I need to present my passport at the port of Entry in Mainland China and Hong Kong or do I need to have visa stamped first? Should I need to come visit personally or can I courier it to Islamabad?

Thanks!