Statute of Progressive Execution of Penalty Article 26

Level 4 and Level 3 prisoners should be confined in solitary cells, except under imperative circumstances wherein this provision shall not be applicable.
中文原文 行刑累進處遇條例第26條
第四級及第三級之受刑人,應獨居監禁。
但處遇上有必要時,不在此限。

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