The Flag of the Republic of China, commonly known as Taiwan, was first used in mainland China by the Kuomintang (KMT) in 1917 and was made the official flag of the ROC in 1928. It was enshrined in the 6th article of the Constitution of the Republic of China when it was promulgated in 1947. Since 1949, the flag is mostly used within Taiwan where the Republic of China relocated after having lost the Chinese Civil War to the People's Republic of China.
Several proposals for a flag of Taiwan have been initiated by supporters of Taiwan independence to replace the flag of the Republic of China as the national flag flown over Taiwan. Supporters of Taiwan independence object to the use of the flag of the Republic of China since it was designed by and is closely associated with the Kuomintang.