Act Governing the Choice of Law in Civil Matters Involving Foreign Elements Article 6

Where this Act provides that the national law of a party is applicable, but the national law of the party indicates that another law should govern the legal relation in question, such other law is applied. However, if the national law of the party or the other law indicates, in turn, the law of the Republic of China as applicable, the internal law of the Republic of China is applied.
中文原文 涉外民事法律適用法第6條
依本法適用當事人本國法時,如依其本國法就該法律關係須依其他法律而定者,應適用該其他法律。
但依其本國法或該其他法律應適用中華民國法律者,適用中華民國法律。

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