some taiwanese still follow folk religions with traditions with historical record going back to the 16th-17th century. (for comparison, the Catholics in Taiwan didnt get to stick around until the 1850s, Matsu worship is probably the closest) In donggang district they have a cool exhibit called the King Boat museum.

The king boat refers to ηηΊ which is a deity that wards off disease that is also celebrated in Mingnan provinces of mainland china and throughout southeast asia too (vietnam, Philippines, indonesia, etc). Oftentimes when people talk about Taiwan's "ancient" historical ties to China it's referring to these sorts of traditions which is only a subset of what has been followed around the island across history and certainly unrecognizable to People's Republic of China of modern times
in taiwan, every 3 years they construct beautiful ships as a tribute to the deities only to burn them when completed. Set a giant wooden ship on fire every 3 years as a measure to suppress epidemics π€