Political status of Taiwan across the Taiwan strait is only temporary and a reunified China including both mainland China and Taiwan will be the result. The position of the Republic of China had been that it was a "de jure" sovereign state. "Republic of China," according to the ROC government's definition, extended to both mainland China (Including Hong Kong and Macau) and the island of Taiwan. In 1991, President Lee Teng-hui unofficially claimed that the government would no longer challenge the rule of the Communists in mainland China, the ROC government under Kuomintang (KMT) rule actively maintained that it was the sole legitimate government
Flag of the Republic of China China, and as such the government of the PRC has made it clear that for Taiwan to change the flag would be a major provocation in favor of Taiwan independence. The ambiguity surrounding the flag was made apparent during the trip of Kuomintang Chairman Lien Chan to mainland China in April 2005, during which the flag was very prominently displayed at ceremonies honoring Sun Yat-Sen at which both KMT party officials and government officials from the PRC were in attendance. One place in Mainland China where the White Sun emblem is still prominently displayed in public is the ceiling mosaic