Central Eurasia

Inner Asia is a term that refers to regions within East Asia and North Asia that are today part of western China, Mongolia and eastern Russia. It overlaps with some definitions of Central Asia, mostly the historical ones, but certain regions of Inner Asia (such as Northeast China) are not considered a part of Central Asia by any of its definitions. Inner Asia may be considered as the "frontier" of China, and as bounded by East Asia, which consists of China, Japan, and Korea.

The extent of Inner Asia was seen differently in different periods. "Inner Asia" is sometimes contrasted to "China Proper", that is, the original provinces, those with majority Han Chinese populations. In 1800 it consisted of four main areas, namely Manchuria (modern Northeast China and Outer Manchuria), Mongolia (Inner and Outer), Xinjiang and Tibet. These areas had been recently conquered by the Qing dynasty but were governed through different administrative structure not as regular provinces during most of the Qing period. The Qing government agency known as the Lifan Yuan was established to supervise the empire's Inner Asian regions.

Inner Asia has a range of definitions and usages.Denis Sinor defined Inner Asia in contrast to agricultural civilizations, noting its changing borders, such as when North China was occupied by the Mongols, or when Anatolia came under Turkish influence, eradicating Hellenistic culture.

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