This article analyses recent archaeological work on the flow of materials and their influences on the communities in the South China Sea maritime regions, primarily from a local, Taiwanese perspective. The intertwined Austronesian Routes and maritime Silk Road acted as the primary conduit for the movement of both people and materials. Archaeological findings demonstrate intermittent interaction and cultural exchange between Taiwan and the regions around the South China Sea during the period 1,500-500 BCE. However, starting from 500 BCE, the gradual increase of glass beads, agate beads, and metal products which were made in mainland Southeast Asia and adjacent regions indicate an intensified interaction between Taiwan and Southeast Asia via the Maritime Silk Road and the Austronesian Routes. The author hypothesizes that trade diasporic craftspeople were the carriers of these exotic materials and knowledge, and that external cultural elements had a profound impact on the development of contemporary prehistoric Formosan society. This can be seen most notably in the shifting of decoration systems, the changing methods of subsistence, and technological leaps. Some of the impacts have faded into the archaeological records, but others are still traceable in the modern Indigenous society of Taiwan.