National Day of the Republic of China National Day of the Republic of China The National Day of the Republic of China, also referred to as Double Ten Day or Double Tenth Day, is the national day of the Republic of China (ROC). It commemorates the start of the Wuchang Uprising of 10 October 1911 (10-10 or double ten), which led to the end of the Qing Dynasty in China and establishment of the Chinese Republic on 1 January 1912. During the course of the Chinese Civil War, the government of the Republic of China lost control of mainland China, fleeing to the Island of Taiwan in
Mainland China in English, is commonly applied by SAR governments to represent non-SAR areas of PRC, including Hainan province and coastal regions of mainland China, such as "Constitutional and Mainland Affairs" () and Immigration Departments. In the Mainland and Hong Kong Closer Economic Partnership Arrangement (as well as the Mainland and Macau Closer Economic Partnership Arrangement) the CPG also uses the Chinese characters "inner land", with the note that they refer to the "customs territory of China". In the United States' Taiwan Relations Act, the ROC-controlled islands of Quemoy and Matsu were excluded from the definition of "Taiwan". The House Foreign Affairs