Getting a Hong Kong visa
Nationals of more than 170 countries and territories may visit Hong Kong visa-free for a period ranging from 7 days to 180 days. For more information on visa/entry permit requirements for visitors to the HKSAR, you may refer to the page of
Hong Kong immigration Department. You must attention that this kind of visa is not able to work in Hong Kong.
If you need to obtain a visa for visiting Hong Kong, you might submit the application through the Chinese diplomatic.
For an extension of stay, you may apply to the Extension Section or any
Immigration Branch Offices (except Hong Kong Island Travel Documents Issuing Office) within four weeks before the expiry of your limit of stay.
You might need to apply a China visa, if you are going to China for your next destination.