Outer Mongolia (Mongolian: ᠭᠠᠳᠠᠭᠠᠳᠤᠮᠣᠩᠭᠤᠯ [Gadagadu Monggol] in Mongolian script, and гадаад Монгол [Gadaad Mongol] in Mongolian Cyrillic; Chinese: 外蒙古; pinyin: Wài Měnggǔ) was a territory of the Manchu-led Qing dynasty. Its area was roughly equivalent to that of the modern state of Mongolia, which is sometimes erroneously called "Outer Mongolia" today, plus the Russian republic of Tuva. While the administrative Outer Mongolia only consisted of the four Khalkha aimags (Setsen Khan Aimag, Tüsheet Khan Aimag, Sain Noyon Khan Aimag and Zasagt Khan Aimag), in the late Qing period "Outer Mongolia" was also used to refer to Khalkha plus Oirat areas Khovd and the directly-ruled Tannu Uriankhai (Chinese: 唐努乌梁海).