* If you are a US citizen, you can stay in Hong Kong for 90 days without applying for a visa
* If you are a Taiwan resident, and if you have entry document to mainland China, you will be treated same as Chinese citizen, i.e. 7 days in and 7 days out. If you don't have such a document, please refer to the 2nd link below.
* If you are a citizen of other nations, please refer to this page for details http://www.immd.gov.hk/ehtml/hkvisas_4.htm
* If you are a Hong Kong resident, well, Mou Man Tai La
* Related links:
http://www.chinaconsulatesf.org/chn/qianzhen/gaqzjrxk/default.htm
http://www.chinaconsulatesf.org/chn/qianzhen/gaqzjrxk/t39832.htm
http://www.chinaconsulatesf.org/chn/qianzhen/gaqzjrxk/t39834.htm
http://www.immd.gov.hk/ehtml/hkvisas_4.htm