Chongqing is a major city in Southwest China and one of the five national central cities in China. Administratively, it is one of China's four direct-controlled municipalities. The official abbreviation of the city, was approved by the State Council on 18 April 1997.This abbreviation is derived from the old name of a part of the Jialing River that runs through Chongqing and feeds into the Yangtze River. Chongqing was also a municipality of the Republic of China (ROC) administration, serving as its wartime capital during the Second Sino-Japanese War .
Chongqing has a significant history and culture and serves as the economic centre of the upstream Yangtze basin. It is a major manufacturing centre and transportation hub; a July 2012 report by the Economist Intelligence Unit described it as one of China's "13 emerging megacities". Chongqing is mostly famous for its delicious food, especially spicy hot pot.