Negotiable Instruments Act Article 111

A protest shall be made in such a way as to immediately follow the last entry already on the bill, or a part of it, if it is drawn in a set or on one of its duplicates.If the protest is made on the allonge, the person making it shall sign across the abutting edges.
中文原文 票據法第111條
拒絕證書應接續匯票上、複本上或謄本上原有之最後記載作成之。
在黏單上作成者,並應於騎縫處簽名。

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