Development of National Languages Act Article 3

“National language” as referred to in this Act shall mean the natural languages and sign languages used by the different ethnic groups in Taiwan.
中文原文 國家語言發展法第3條
本法所稱國家語言,指臺灣各固有族群使用之自然語言及臺灣手語。

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