Referendum Act Article 29

A referendum proposal shall be passed if the number of valid votes in favor of the proposal exceeds the number of valid votes against the proposal, and the number of valid votes in favor of the proposal constitutes at least one-fourth of the total number of eligible voters.A referendum proposal shall be rejected if the number of valid votes in favor of the proposal is less than the number of valid votes against the proposal, or if the number of valid votes in favor of the proposal fails to reach the threshold stipulated in the preceding paragraph.
中文原文 公民投票法第29條
公民投票案投票結果,有效同意票數多於不同意票,且有效同意票達投票權人總額四分之一以上者,即為通過。
有效同意票未多於不同意票,或有效同意票數不足前項規定數額者,均為不通過。

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