Four-Stage Theory of the Republic of China its remaining major component – the island of Taiwan, as opposed to its decades-long claim to all China since losing the civil war in 1949. Prior to this speech, the government officials used "Republic of China" when the name of the state was used. Lee's usage is considered as a departure from the convention, as this usage can be interpreted in the sense that the Republic of China's sovereignty does not extend to mainland China, which the People's Republic of China controls. The Democratic Progressive Party's 1999 Resolution on Taiwan's Future, which is accorded equivalent status as the Party charter,
Mainland China area occupied by PRC as "mainland", since it is officially considered still part of the ROC territory but just enemy occupied. In contrast, the pro-Taiwan independence Democratic Progressive Party (DPP) prefer to use the term "China" instead, referring to the PRC, to imply that Taiwan (ROC) is separate from China. Related to this naming and broader national identity issue, the DPP would also like to amend the ROC constitution to limit its scope and territorial description to the Free area of the Republic of China only and rectify the ROC country name to "Republic of Taiwan" instead, thereby eliminating the