Enforcement Rules of the Name Act Article 16

When the household registration office receives an application for a surname alteration, alteration of a given name, or alteration of the full name for a national fourteen years of age or older, said office shall check with the relevant authority to see if any of the circumstances specified in Article 15 of the Act exist.
中文原文 姓名條例施行細則第16條
戶政事務所受理十四歲以上國民申請改姓、改名或更改姓名者,應向相關機關查詢有無本條例第十五條所定情事。

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