Hinggan League in the context of "Khorchin Mongolian"

Northeast China (Chinese: 东北; pinyin: Dōngběi) is a geographical region of China, consisting officially of three provinces Liaoning, Jilin and Heilongjiang. The heartland of the region is the Northeast China Plain, the largest plain in China with an area of over 350,000 km (140,000 sq mi). The region is separated from the Russian Far East to the north and east by the Amur, Argun and Ussuri Rivers; from North Korea to the south by the Yalu and Tumen Rivers; and from the neighboring North China to the west by the Greater Khingan Range and Yan Mountains. It is also bounded by the Bohai Bay and Yellow Sea to the southwest, about 100 km (62 mi) away from East China's Jiaodong Peninsula across the Bohai Strait, due to be connected via a proposed undersea tunnel.

The four prefectures of Inner Mongolia (which is part of North China) east of the Greater Khingan, i.e. Chifeng, Tongliao, Hinggan and Hulunbuir, are sometimes also considered broader parts of Northeast China, and together with the aforementioned three provinces formed what was historically known as Inner Manchuria, in contrast to the Outer Manchuria (or "Outer Northeast" in Chinese literatures) annexed by the Russian Empire during the mid-19th century.

Manchuria is a historical region in northeast Asia encompassing the entirety of present-day northeast China and parts of the modern-day Russian Far East south of the Uda River and the Tukuringra-Dzhagdy Ranges. The exact geographical extent varies depending on the definition: in the narrow sense, the area constituted by three Chinese provinces of Heilongjiang, Jilin, and Liaoning as well as the eastern Inner Mongolian prefectures of Hulunbuir, Hinggan, Tongliao, and Chifeng; in a broader sense, historical Manchuria includes those regions plus the Amur river basin, parts of which were ceded to the Russian Empire by the Manchu-led Qing dynasty during the Amur Annexation of 1858–1860. The parts of Manchuria ceded to Russia are collectively known as Outer Manchuria or Russian Manchuria, which include present-day Amur Oblast, Primorsky Krai, the Jewish Autonomous Oblast, the southern part of Khabarovsk Krai, and the eastern edge of Zabaykalsky Krai.

The name Manchuria is an exonym (derived from the endonym "Manchu") of Japanese origin. The history of "Manchuria" (Manzhou) as a toponym in China is disputed, with some scholars believing it was never used while others believe it was by the late 19th century. The area was historically referred to by various names in the Qing dynasty such as Guandong (East of the Pass) or the Three Provinces referring to Fengtian (Liaoning), Heilongjiang, and Jilin. Manchuria as a geographical term was first used in the 18th or 19th centuries by the Japanese before spreading to Europe. The term was promoted by the Empire of Japan in support for the existence of its puppet state, Manchukuo. Although the toponym is still used, some scholars treat the term with caution or avoid it altogether due to its association with Japanese colonialism. The term is deprecated in China due to its association with Japanese imperialism and ethnic connotations. As a result, areas once considered part of Manchuria are simply referred to as the Northeast. The Three Provinces and the Northeast were also in concurrent use among the Japanese along with Manchuria until the Mukden incident of 1931.

Hulunbuir or Hulun Buir is a prefecture-level city in northeastern Inner Mongolia, China. Its administrative center is located at Hailar District, its largest urban area. Major scenic features are the high steppes of the Hulun Buir grasslands, the Hulun and Buir lakes (the latter partially in Mongolia), and the Khingan range. Hulun Buir borders Russia to the north and west, Mongolia to the south and west, Heilongjiang province to the east and Hinggan League to the direct south. Hulunbuir is a linguistically diverse area: next to Mandarin Chinese, Mongolian dialects such as Khorchin and Buryat, the Mongolic language Daur, and some Tungusic languages, including Oroqen and Solon, are spoken there.

Revitalize The Old Northeast Industrial Bases (simplified Chinese: 振兴东北老工业基地; traditional Chinese: 振興東北老工業基地; pinyin: Zhènxīng Dōngběi Lǎo Gōngyè Jīdì), also Revitalize Northeast China or Northeast China Revitalization, is a policy adopted by the People's Republic of China to rejuvenate industrial bases in Northeast China. The areas targeted once functioned as the center of heavy industry in China, first under Japanese-occupation (Manchukuo and Kwantung Leased Territory) and then under the state-led development of the People's Republic of China before reform and opening-up. Since the 1980s, the region has been heavily affected by the restructuring of the Chinese economy and the closing and consolidation of many heavy industry State-owned enterprises (SOEs). It covers three provinces: Heilongjiang, Jilin, and Liaoning, collectively referred to as Dongbei, as well as the five eastern prefectures of Inner Mongolia: Xilin Gol, Chifeng, Tongliao, Hinggan and Hulunbuir.

Xilingol League (also transliterated as Xilin Gol or Shiliin Gol; Chinese: 锡林郭勒盟; Mongolian: , Шилийн Гол аймаг, Shiliin Gol aimag, pronounced [ʃɪ̆ˈliŋ ɢɔl ˈɛːmə̆k]) is one of the 3 leagues of Inner Mongolia. The seat is Xilinhot, and the area is 202,580 km (78,220 sq mi). The league's economy is based on mining and agriculture.

Xilingol borders Mongolia to the north, Chifeng, Tongliao and Hinggan League to the east, Ulanqab to the west and Hebei to the south.