My former boss has set-up his own business in Hkg and he asked me if I am interested to join him as a partner. He is inviting me to come to Hkg and stay for at least 3 months to observe and see how the business is going and maybe I can give inputs for its improvement, if any. All my expenses will be shouldered by him. What kind of visa do I need to stay that long in Hkg? If I need a business visa, what exactly are the documents required for me to present given my situation? He wants me to come by first week of October. Appreciate your reply...thank you for your time!