581
In light of recent events, here's OpenStreetMap editors discussing naming of the Gulf of Mexico
(community.openstreetmap.org)
This is a most excellent place for technology news and articles.
Taiwan is the island, also known as Formosa, and it is ruled by the Republic of China. Separately, but still part of that state, there's the autonomous mainland provinces, calling themselves the People's Republic of China, a rebel faction which somehow steadfastly refuses to declare independence.
Looking at it this way, I'd call the "mainland" part West Taiwan
Nah West Taiwan is the western half of Taiwan. It's an island, not a state, just as Denmark is not Jutland, or Spain, or Portugal (fight!) Iberia.
You're getting downvoted but you ain't wrong.