Household Registration Act Article 42

For the person departing from the country, who shall be subject to the moving-out registration under Paragraph 3 of Article 16, the Household Registration Office where the person’s domicile is registered shall proceed with the moving-out registration at its discretion.
中文原文 戶籍法第42條
依第十六條第三項規定應為出境人口之遷出登記者,其戶籍地戶政事務所得逕行為之。

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