The fact that shards belonging to the Tap'enk'eng culture have been found in areas as far apart as Taichung, Tainan and Kaohsiung shows that in early times movement was more convenient and cultural transference correspondingly easier in the west than in the east.
只是當時冰河期已過，「老祖宗」勢必得渡海，旅途可能辛苦一些。大坌坑文化的「代表作」，在台中、台南、高雄都出現過。這種現象顯示在早期西部地區的往來交通較東部方便，文化也容易傳遞。