Regulations Governing Custody and Investment of Funds by Securities Firms on Behalf of Customers Article 14

Where the funds kept under custody and invested by a securities firm on behalf of a customer are kept for a period exceeding ten business days, and are less than the required minimum amount for investment as specified in Article 16 and have to be transferred to the customer's account at a financial institution, that customer account may not be other than the funds transfer account for securities opened by the customer to conduct the transactions under Article 10, paragraph 1, subparagraph 1.
中文原文 證券商辦理客戶委託保管及運用其款項管理辦法第14條
證券商接受客戶委託保管及運用之款項,超過十個營業日且未達第十六條第二項第二款所定款項運用之最低金額,應撥轉至客戶之金融機構帳戶者,該客戶之金融機構帳戶限定為其從事第十條第一項第一款交易所開立之證券款項劃撥帳戶。

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