Sandao
Sāndǎo, also known as Sanyu and Sanshu, were a collection of a prehispanic Philippine polities recorded in Chinese annals as a nation occupying the islands of , , and . In the Chinese Gazetteer the Zhūfān zhì 諸蕃志, they were described as tributary states of the more powerful nation of Ma-i centered in nearby Mindoro.
They described Sandao as thus:
Sandao remained tributary states of Ma-i until its territories were invaded by Sulu and Brunei marking the end of their independence.