The Central Bank of the Republic of China (Taiwan) Act Article 29

The Bank may, whenever necessary, prescribe and regulate the amount of down-payment and the term of credit extended by banks for the purchase or construction of buildings and the purchase of durable consumer goods.
中文原文 中央銀行法第29條
本行於必要時,得就銀行辦理購建房屋及購置耐久消費品貸款之付現條件及信用期限,予以規定,並管理之。

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