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 people often call the area of non-coastal provinces in of Mainland China as "Inland" (). In Taiwan, certain people, the Kuomintang (KMT, "Chinese Nationalist Party") and its supporters use the term "mainland" is to refer to the territory of the PRC (Hong Kong and Macau excluded). This accords with the KMT position that "China" encompasses both sides of the Taiwan Strait. Since the KMT was the ruling party in Taiwan until 2000 and the only party allowed until the late 1980s, and had set up the educational system and taught children the term since its takeover in 1945, the term