http://travel-t-china.blogspot.com/2011/12/china-passport-and-visa-entry.html
china Passport and Visa entry requirements
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Passports:
To enter China, a passport is required by all nationals referred to in the chart above.
Passports must be valid for at least one month from your fixed departure date from Hong Kong for a single entry, 12 months for a double entry or six month multiple entry, and 18 months for a 12 month multiple-entry visa.
Passport and Visa entry requirements :-
Entry requirements for Americans: US nationals require a passport and visa for entry to China.
Entry requirements for UK nationals: UK nationals require a passport and visa for entry to China. Passports endorsed British National (Overseas) are not recognized and holders should carry a 'Returning Resident Permit' together with their Hong Kong ID.
Entry requirements for Canadians: Canadians require a passport and visa for entry to China.
Entry requirements for Australians: Australians require a passport and visa for entry to China.
Entry requirements for South Africans: South African nationals require a passport and visa for entry to China.
Entry requirements for New Zealanders: New Zealand nationals require a passport and visa for entry to China.
Entry requirements for Irish nationals: Irish nationals require a passport and visa for entry to China.
Passport/Visa Note: Visa not required if coming for a stay of six days only if arriving from Hong Kong or Macao in order to take a trip to Zhujian Delta in Guangdong Province. Persons holding an APEC Business Travel Card do not require a visa, provided that it is valid for travel to China. Travel to Tibet will also require a special Tibet Entry Permit. All documents necessary for further travel and sufficient funds to cover intended period of stay are required. Period of validity is stated on visas, and care should be taken when reading dates on visas for China as they are written in year/month/day format.