Taiwanese Kana: Using Japanese phonetics to write Taiwanese
During the Japanese colonial era in Taiwan, kana, a phonetic system of writing used to write Japanese, was adapted by the authorities to represent Taiwanese. This required some imagination due to the relative complexity of Taiwanese phonology compared to Japanese, so some kana glyphs had to be altered to extend the number of characters and cover the new sounds the Japanese linguists encountered.
With the departure of the Japanese in 1945, the system fell in to disuse and is unlikely to be encountered by modern students of Taiwanese.
