Negotiable Instruments Act Article 110

If the holder presents the original bill for acceptance or payment and it is not returned after dishonor, the protest shall be made on one of the duplicates or on the allonge annexed thereto, if any.
中文原文 票據法第110條
執票人以匯票之原本請求承兌或付款而被拒絕,並未經返還原本時,其拒絕證書,應在謄本或其黏單上作成之。

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