The National Immigration Administration announced on Dec 17 that it will fully relax and optimize the visa-free transit policy, which is effective immediately.
The Permanent Residence Permit, or the Chinese "green card", is a valid personal ID for foreigners who have obtained permanent residence status in China.
A visa is an officially approved document issued by authorized bodies for the government, in accordance with the laws of the country, to foreign citizens applying to enter, leave or transit through the country.