Prison Act Article 16

Housing areas at a prison include single housing areas and group housing areas.As a principle, inmates are assigned to group housing areas after admission. A prison may adjust housing area assignment based on its management needs.
中文原文 監獄行刑法第16條
監禁之舍房分為單人舍房及多人舍房。
受刑人入監後,以分配於多人舍房為原則。
監獄得依其管理需要配房。

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