I am Pakistani currently living in UAE as a Permanent Residence how I can apply for Hong Kong Visa

If you want to apply for a tourist entry permit, the first step is to prepare the required materials containing the application form, a passport-style photo, hotel reservation, copy of your passport, bank savings account, flight itinerary and your travel plan. Next, submit the application to the embassy of PRC to apply for it, or post your application to HK immigration department to apply for it. Here is the postal address:
Receipt and Despatch Sub-unit
HK Immigration Department
2/F, Immigration Tower
7 Gloucester Road
Wan Chai, HK