Northeast China

Northeast China (simplified Chinese: 东北; traditional Chinese: 東北; pinyin: Dōngběi) is a geographical region of China, also called Manchuria in history. It usually corresponds specifically to the three provinces east of the Greater Khingan Range, namely Liaoning, Jilin, and Heilongjiang, but historically is meant to also encompass the four easternmost prefectures of Inner Mongolia west of the Greater Khingan. The heartland of the region is the Northeast China Plain, the largest plain in China, with an area of over 350,000 km² (140,000 sq mi). It is separated from Russian Far East to the north by the Amur, Argun, and Ussuri Rivers; from Korea to the south by the Yalu and Tumen Rivers; and from Inner Mongolia to the west by the Greater Khingan and parts of the Xiliao River.

Due to the shrinking of its once-powerful industrial sector and the decline of its economic growth and population, the region is often referred to as China's Rust Belt. As a result, a campaign named Northeast Area Revitalization Plan was launched in the 2000s by the State Council of the People's Republic of China, in which five prefectures of eastern Inner Mongolia, namely Hulunbuir, Hinggan, Tongliao, Chifeng and Xilin Gol, are also formally defined as regions of the Northeast.