The Banking Act of The Republic of China Article 121

Businesses which may be operated by a foreign bank shall be prescribed by the competent authority in regulations after the consultation with the Central Bank of the Republic of China and within the scope prescribed in Articles 71 and 101, Paragraph 1. Matters in connection to foreign exchange shall be approved by the Central Bank of the Republic of China.
中文原文 銀行法第121條
外國銀行得經營之業務,由主管機關洽商中央銀行後,於第七十一條及第一百零一條第一項所定範圍內以命令定之。
其涉及外匯業務者,並應經中央銀行之許可。

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