Act Governing the Choice of Law in Civil Matters Involving Foreign Elements Article 15

If an alien legal person establishes a branch under the law of the Republic of China, the internal affairs of that branch are governed by the law of the Republic of China.
中文原文 涉外民事法律適用法第15條
依中華民國法律設立之外國法人分支機構,其內部事項依中華民國法律。

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