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
Nationality law of the People's Republic of China restrictions as long as they arrive from a third country. In accordance with the "Act Governing Relations between the People of the Taiwan Area and the Mainland Area" of the ROC, any ROC national with Household Registration (ROC nationals with full citizenship rights in Taiwan) who obtains a passport issued to Mainland residents of the PRC or hukou of Mainland China, automatically loses his Household Registration in Taiwan, which in turn causes the loss of the person's citizenship rights in the ROC (since he or she has already obtained the "de facto" citizenship of Mainland China). However, the person does