.... It turns out that those three other subfamilies have coincident distributions all of them tiny compared with the distribution of Malayo- Polynesian. They are confined to aborigines of the island of Taiwan, lying only 90 miles from the South China mainland. Taiwan's aborigines had the island largely to themselves until mainland Chinese began settling in large numbers within the last thousand years. Still more mainlanders arrived after 1945, especially after the Chinese Communists defeated the Chinese Nationalists in 1949, so that aborigines now constitute only 2 percent of Taiwan's population. The concentration of three out of the four Austronesian subfamilies on Taiwan suggests that, within the present Austronesian realm, Taiwan is the homeland where Austronesian languages have been spoken for the most millennia and have consequently had the longest time in which to diverge. All other Austronesian languages, from those on Madagascar to those on Easter Island, would then stem from a population expansion out of Taiwan.
WE CAN NOW turn to archaeological evidence. While the debris of ancient village sites does not include fossilized words along with bones and pottery, it does reveal movements of people and cultural artifacts that could be associated with languages. Like the rest of the world, most of the present Austronesian realm—Taiwan, the Philippines, Indonesia, and many Pacific islands—was originally occupied by hunter-gatherers lacking pottery, polished stone tools, domestic animals, and crops. (The sole exceptions to this generalization are the remote islands of Madagascar, eastern Melanesia, Polynesia, and Micronesia, which were never reached by hunter-gatherers and remained empty of humans until the Austronesian expansion.) The first archaeological signs of something different within the Austronesian realm come from—Taiwan. Beginning around the fourth millennium B.C., polished stone tools and a distinctive decorated pottery style (so-called Ta-p'en-k'eng pottery) derived from earlier South China mainland pottery appeared on Taiwan and on the opposite coast of the South China mainland. Remains of rice and millet at later Taiwanese sites provide evidence of agriculture.
Ta-p'en-k'eng sites of Taiwan and the South China coast are full of fish bones and mollusk shells, as well as of stone net sinkers and adzes suitable for hollowing out a wooden canoe. Evidently, those first Neolithic occupants of Taiwan had watercraft adequate for deep-sea fishing and for regular sea traffic across Taiwan Strait, separating that island from the China coast. Thus, Taiwan Strait may have served as the training ground where mainland Chinese developed the open-water maritime skills that would permit them to expand over the Pacific. One specific type of artifact linking Taiwan's Ta-p'en-k'eng culture to later Pacific island cultures is a bark beater, a stone implement used for pounding the fibrous bark of certain tree species into rope, nets, and clothing.
Once Pacific peoples spread beyond the range of wool-yielding domestic animals and fiber plant crops and hence of woven clothing, they became dependent on pounded bark "cloth" for their clothing. Inhabitants of Rennell Island, a traditional Polynesian island that did not become Westernized until the 1930s, told me that Westernization yielded the wonderful side benefit that the island became quiet. No more sounds of bark beaters everywhere, pounding out bark cloth from dawn until after dusk every day!
Within a millennium or so after the Ta-p'en-k'eng culture reached Taiwan, archaeological evidence shows that cultures obviously derived from it spread farther and farther from Taiwan to fill up the modern Austronesian realm (Figure 17.2). ......
....Although we infer that Austronesian speakers originated from coastal South China, Austronesian languages today are not spoken anywhere in mainland China, possibly because they were among the hundreds of former Chinese languages eliminated by the southward expansion of Sino-Tibetan speakers. But the language families closest to Austronesian are thought to be Tai-Kadai(傣-佧岱語), Austroasiatic(南亞語), and Miao-Yao(苗傜語). Thus, while Austronesian languages in China may not have survived the onslaught of Chinese dynasties, some of their sister and cousin languages did. ...... (Jared Diamond, Guns, Germs, and Steel)