About 5000 years ago was the "New Stone Age". People in New Stone Age sharpened stones to make tools. We can take New Stone Age into three parts. The most famous cultures are the Tapenken culture, the Beinan culture, and the Yuanshan culture. The Tapenken culture monument is the Tapenken Monument (also known as T.P.K.) in Taipei, the Beinan culture's monument is the Puyuma Relics in Taitung Conty, and the Yuanshan culture's monument is the Yuanshan Monument in Taipei City.