Most scholars believe this culture was brought across the Taiwan Strait by the ancestors of today's Taiwanese aborigines, speaking early Austronesian languages.
The outsides of the jars are covered with impressed cord marks, except for the flared rims, which are decorated with incised linear designs.
[9][10] Because of the continuity with later cultures, most scholars believe that the Dapenkeng people were the ancestors of today's Taiwanese aborigines, and spoke Austronesian languages.
[21] Roger Blench (2014) suggests that the single migration model for the spread of the Neolithic into Taiwan is problematic, pointing out the genetic and linguistic inconsistencies between different Taiwanese Austronesian groups.
Based on geography and cultural vocabulary, Blench believes that the Yuanshan people may have spoken Northeast Formosan languages.
Instead, multiple migrations of various pre-Austronesian peoples and languages from the Chinese mainland that were related but distinct came together to form what we now know as Austronesian in Taiwan.