Statute of Progressive Execution of Penalty Article 21

The score acquired by each level prisoner shall be used to write off his/her existing responsibility score to enable the prisoner to advance to a higher level.Once the responsibility score for a particular level has been fully written off and the prisoner still has excess scores, the excess scores shall be included in the score of the next level.
中文原文 行刑累進處遇條例第21條
各級受刑人之責任分數,以其所得成績分數抵銷之,抵銷淨盡者,令其進級。
本級責任分數抵銷淨盡後,如成績分數有餘,併入所進之級計算。

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