This is very interesting about the 2% Indigenous Taiwanese. These people have no ties to mainland Asia and share ancestral history similar to those from the Philippines, Malaysia, and Polynesia.
Taiwan is now known as the Republic of China. It has also been known as Formosa, once occupied by the Netherlands. Japan also occupied Taiwan. If you watch Warriors of the Rainbow, you might get some insight into that part of the island’s history. China is the most recent colonizer with the longest stay.
Whenever you get a chance to visit Taiwan, please take a look at the Taiwanese Indigenous Peoples Culture Park. Similar to the Polynesian Culture Center in Oahu, Hawaii, this attraction showcases many of the folk dances in Taiwan. I’m proud to be of the Taiwanese heritage.