However, the Republic of China (ROC), which ruled mainland China from 1912 to 1949 and currently governs the island of Taiwan since 1945, had recognized five main ethnic groups under Five Races Under One Union: Han, Hui, Manchu, Mongol and Tibetan. Since retreating to Taiwan, the ROC government recognizes 16 groups of Taiwanese aborigines, which constitutes a number 569,000 or 2.38% of the island's population. The PRC classifies them as Gāoshān.
