Because the visa system in Hong Kong is different from that of China mainland, tourists who want to enter in Hong Kong might need to apply for a visa according to the regulation of Hong Kong visa system

 

Generally, if you enter into Hong Kong from the China mainland and return, a valid entry on your Chinese visa should be carried by you, or you can apply a new visa in Hong Kong (and although it is normally granted, it is not a 100% certainty). 

 

And visitor stayed in Hong Kong within 14 days to 90 days, depending on which passport you are holding, is allowed without a visa. But sufficient funds are one of the pre-conditions because Hong Kong Government will not allow any visitors to look for a job here even without paid.

 

Hong Kong Visa Exemption

Not all the people who travel to Hong Kong need to get a tourist visa. Visitors who get the following documents can enter into it without visas:

Information about people who should apply for a Hong Kong visa can be found in the Hong Kong Immigration Authority’s website.