Local Government Act Article 14

Special municipalities, counties/cities, and townships/cities are local self-governing bodies that carry out self-government matters in accordance with this Act and commissioned matters commissioned by higher levels of government.
中文原文 地方制度法第14條
直轄市、縣(市)、鄉(鎮、市)為地方自治團體,依本法辦理自治事項,並執行上級政府委辦事項。

English translation for reference only; the Chinese text prevails. Not legal advice.