From 1624 the Dutch were encamped in southern Formosa (their name for Taiwan) and heavily disrupting trade in the region for the Spanish and Portuguese. By 1626 the Spanish had decided to take action and sent an expedition to form a colony in northern Hermosa (their name for Taiwan). After finding an apparently perfect place, complete with a village ready and waiting for them to occupy, they began experiencing difficulties. Supplies were in short demand, as Hermosa was the most distant outpost of the Spanish empire.
(above left) an image of Keelung Bay from 1626 showing what is today known as Heping (Peace) Island in the north.
(above right) an image of Taiwan from the late 1630s showing the Dutch in the south and the Spanish in the north.