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
Four-Stage Theory of the Republic of China By this theory, Chen pointed out that the Republic of China was at the 4th stage after the first ruling party rotation of the central government in 2000. That is, Taiwan, with the official name called the "Republic of China", is already an independent sovereign state separate from People's Republic of China. This theory is welcomed by the mainstream of the Pan-Green coalition (led by the Democratic Progressive Party) in Taiwan, which supports eventual "de jure" Taiwan independence; but is not welcomed by most members of the Pan-Blue coalition (Kuomintang), which supports the eventual reunification of Taiwan with mainland China