Referendum Act Article 16

If the nation is under threat of external force and ,which render national sovereignty at risk of change, the President may, by a resolution of the Executive Yuan Council, submit matters concerning national security to a referendum.The provisions of Articles 9 through 13, the provision regarding the time periods stipulated in Paragraph 1 of Article 17, and the provisions of Paragraph 3 of Article 17, Article 19, and Article 23 shall not apply to the referendum referred to in the preceding paragraph.
中文原文 公民投票法第16條
當國家遭受外力威脅,致國家主權有改變之虞,總統得經行政院院會之決議,就攸關國家安全事項,交付公民投票。
前項之公民投票,不適用第九條至第十三條、第十七條第一項關於期間與同條項第三款、第十九條及第二十三條規定。

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