i want to travel to Hong Kong from pakistan for the work?

First, prepare the relevant documents: travel itinerary, copy of passport, the application form, passport-style photo, copies of your work experience and certificate of degree, copy of residence permit in Saudi Arabia, your HK employer's application form, copy of your contract, copy of the company's business license, copy of the company's financial support proof, and introduction letter of the company and others. Next, submit the application to China embassy or post it to HK immigration department directly.