Regulations Governing the Detention of the People of the Mainland China Area and the Residents of Hong Kong and Macao Article 4

Articles carried in by a detainee shall be examined, and except for the daily necessities in needed, such articles shall be put in the custody of a detention center. A Personal Property Record shall be made by the duty officer upon receiving such articles. The articles shall be returned when the detainee leaves the detention center. For valuable articles, a Valuable Personal Property Record shall be made. When the articles are considered as not suitable for custody by the detention center, the detainee shall be ordered to properly dispose such articles immediately. The above requirements shall also apply to articles mailed to detainees.To ensure the safety and security of all detention area and for the purpose of management, the detainees shall be inspected if necessary.
中文原文 大陸地區人民及香港澳門居民收容管理辦法第4條
受收容人攜帶之物品應經檢查,除必要之日用品外,應由收容處所代為保管,並製作代保管紀錄,於出所時發還;貴重物品,應製作財物代管發還紀錄表;收容處所認為不適宜保管之物品,應不予保管,並當場請受收容人為適當之處理。
他人寄送予受收容人之物品,亦同。
為確保收容區安全及管理之必要,收容處所得對受收容人之身體、隨身物品及收容區實施檢查。

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