2007 Criminal Commutation Act Article 6

Offenders, who committed offenses that are not to be commuted as stipulated in Article 3 and were not discovered by the authorities, but surrender themselves to the authorities and have received judgment during the period prior to the enactment of this Act through three months after its enactment, shall receive commutation in accordance with the provisions stipulated in Article 2, Paragraph 1 of this Act.
中文原文 中華民國九十六年罪犯減刑條例第6條
對於第三條所定不予減刑而未發覺之罪,於本條例施行前至施行之日起三個月內自首而受裁判者,依第二條第一項規定予以減刑。

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