China

China, also known as the People's Republic of China, is a country located in Asia. It is one of the largest countries in the world and also the most populous.

Background
China is the origin of a number of systems and items of magical significance, such as Feng shui and the grimoire Baopuzi.

Tree Diagram Remnant Arc
China was one of the countries that launched spacecraft to retrieve the remains of the destroyed Tree Diagram.

Toaru Majutsu no Index Light Novel Volume SS2
On the Second Friday of October, Misaka 19009 was one of the Sisters sent to Gemstone Mining research organizations around the world. She was sent to Beijing, China, at the Human Evolution Committee, to destroy the facilities and rescue the gemstone there. During her periodic progress report, she mentioned she was under attack from a helicopter that had just appeared, but was not concerned about it.

World War III
When World War III breaks out, the display by Academy City leads China and India to side with them over Russia.