- Length of border with China: Length in km of each country's border with China. China has international borders with 14 countries, and a total border length of 22,117 kilometres (13,743 mi). That makes it the longest of any country in the world.
- National identity card: Description.
- Overview: A geopolitical overview of every sovereign country in the world, briefly examining their recent history and place on the global stage. The texts are taken from the BBC News website.
SOURCES: CIA World Factbook: China; Wikipedia: List of national identity card policies by country (Countries with compulsory identity cards) (EU Directive 2004/38/EC); British Broadcasting Corporation 2014