There are several opposing theories regarding the origins of ancient Filipinos.
The most widely accepted theory, based on linguistic and archeological evidence, is the "Out-of-Taiwan" model, which hypothesizes that Austronesians from Taiwan, who were themselves descended from the neolithic civilizations of the Yangtze river such as the Liangzhu culture,[REF] began migrating to the Philippines around 4000 BC, displacing earlier arrivals [REF].