How long will it take to receive the letter sent to the detention center?

Legal analysis: first of all, not all detention centers can communicate; Secondly, even if we can communicate, it is very slow to send it from the inside, because we have to go through layers of audit. If it is criminal detention, the detention period is 37 days at most, and then there will usually be a result, either arrest or release. If you are arrested, you will continue to be detained for investigation. Usually you will be transferred to the court for trial in about six months. Legal basis: Article 31 of the Postal Law of People's Republic of China (PRC) stipulates that ordinary letters sent by conscripts from the army are delivered free of charge, and other soldiers are not allowed to deliver letters free of charge. Measures for the supervision and administration of the delivery of ordinary letters by conscripts shall be formulated by the Ministry of Posts and Telecommunications in conjunction with the relevant departments of the China People's Liberation Army. Article 32 The mail delivered by users shall conform to the packaging specifications and writing format stipulated by the Ministry of Posts and Telecommunications, and the postal code shall be correctly written, among which the envelope used by users for delivering letters must meet the national standards; Do not print (write) or paste words or other items unrelated to the mail on the cover and mailing list of the mail; The front of the postage certificate shall not be smeared or covered with other items; Shall not use forged, imitation, cutting together, processing decontamination postage certificates. Article 38 When receiving the vouched mail and cashing the remittance, the recipient shall submit his valid certificate to the relevant postal enterprises or branches, and affix his seal or signature on the relevant forms. Entrusted by the recipient (payer), when the agent receives the mail (remittance), it shall submit the valid certificates of the recipient (payer) and the agent, which shall be sealed or signed by the agent after being confirmed by the postal enterprise or branch. Valid documents include resident ID card, household registration book and work permit.