Simple Life Insurance Act Article 18

The applicant may at any time request the insurer to terminate the insurance contract; however, the effectiveness of the termination shall not be retroactive.
中文原文 簡易人壽保險法第18條
要保人得隨時向保險人聲明終止保險契約;其終止效力,不溯及既往。

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