How many days is it appropriate to travel to Taiwan Province Province?

Generally speaking, the key points in Taiwan Province Province are Keelung, Taibei, Taichung, Nantou, Chiayi, Tainan, Kaohsiung, Pingtung, Taitung, Hualien and Yilan. It takes about 7.8 days to go around the island. Because of the distance, some places have to spend the night if they can't finish playing in one day. If the outer islands of Taiwan Province Province (Penghu, Kinmen and Mazu) are added, at least two islands should be added to each island.