Mongols in China or Mongolian Chinese (), are ethnic Mongols who were domesticated and integrated into the nation-building of the Republic of China (1912–1949) after the fall of Qing Empire (1636–1911). Those not integrated broke away in the Mongolian Revolution of 1911 and again in 1921. The Republic of China recognized Mongols to be part of the Five Races Under One Union. Its successor, the People's Republic of China (1949-), recognized Mongols to be one of the 55 ethnic minorities in China.