History of the Republic of China its remaining islands in Fujian as vital for any future campaign to defeat the PRC and retake mainland China. On 3 September 1954, the First Taiwan Strait Crisis began when the PLA started shelling Quemoy and threatened to take the Dachen Islands. On 20 January 1955, the PLA took nearby Yijiangshan Island, with the entire ROC garrison of 720 troops killed or wounded defending the island. On January 24 of the same year, the United States Congress passed the Formosa Resolution authorizing the President to defend the ROC's offshore islands. The First Taiwan Straits crisis ended in March 1955 when
Mainland China has been in mainstream use and usually has no particular political connotations, since generations born after the takeover were taught that Taiwan is part of Republic of China, and so is mainland China, and that they are "Chinese". Government organizations and official and legal documents in Taiwan, including the Republic of China Constitution also use "the mainland" to refer to mainland China, since the ROC government has never recognized the founding of the PRC and because its Constitution does not allow the existence of another state within its territory, constitutional amendments made in the 1990s had to refer to the