Act Governing the Choice of Law in Civil Matters Involving Foreign Elements Article 46

The formation of a marriage is governed by the national law of each party. However, a marriage is also effective if it satisfies the formal requisites prescribed either by the national law of one of the parties or by the law of the place of ceremony.
中文原文 涉外民事法律適用法第46條
婚姻之成立,依各該當事人之本國法。
但結婚之方式依當事人一方之本國法或依舉行地法者,亦為有效。

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