How to get hong kong visa for Pakistani national and in how much time?

You may submit your application forms together with the relevant supporting documents in person to the nearest Chinese diplomatic and consular mission in your place of domicile. You may also fax your visa application to the immigration department of Hk through (852) 2824 1133 first, and then post the original copy of the duly completed application forms and the photograph required to the immigration department by air mail. The address is Receipt and Despatch Unit Hong Kong Immigration Department 2/F, Immigration Tower 7 Gloucester Road Wan Chai, Hong Kong.

It normally takes four weeks to process a visit/transit visa application upon receipt of all the required documents.