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

Legal analysis: people in the detention center receive letters quickly, but send them slowly. Writing a letter to the detention center is as fast as usual, but it takes at least 20 days and at most more than a month to send a letter to the detention center, because sending and receiving letters must be checked by prison guards and the content must be read. Make sure there is nothing else before sending a letter.

Legal basis: Article 28 of the Regulations of People's Republic of China (PRC) Detention Center allows criminals to communicate and meet with their close relatives with the consent of the case-handling organ and the approval of the public security organ.