Usually they are detained in the detention center, but the criminals must be sent to prison within one month after the judgment takes effect.
According to the provisions of my country's "Prison Law", the detention center will send the criminal to the prison within one month after the judgment takes effect, and within five days after the prison team is officially dispatched, the prison will issue a notification letter to the family members.
Article 15 of the "Prison Law" stipulates that for criminals sentenced to death with a two-year suspension of execution, life imprisonment, or fixed-term imprisonment, the People's Court shall deliver the execution notice and judgment to the public security organ that detained the criminal. The public security organ shall deliver the criminal to prison for execution within one month from the date of receipt of the execution notice and judgment.
Article 20 After a criminal is admitted to prison, the prison shall notify the criminal’s family. The notice shall be issued within five days from the date of admission to custody.
Detention centers shall detain criminal suspects on the basis of arrest warrants or criminal detention warrants from public security agencies at or above the county level, national security agencies, and documents proving the pursuit, escort, or temporary custody of criminal suspects from the people's courts and people's procuratorates. . If there is no above-mentioned certificate or if the certificate record is inconsistent with the actual situation, the person shall not be detained.
Criminal suspects who enter the detention center are persons under review and are absolutely prohibited from contacting anyone outside, but they have the right to meet with a lawyer. Defense attorneys can meet and correspond with suspects and defendants in custody. Other defenders may also meet with and communicate with criminal suspects and defendants in custody with the approval of the People's Court and People's Procuratorate. If a defense lawyer requests to meet with a criminal suspect or defendant in custody with a lawyer's practicing certificate, a law firm certificate, a power of attorney, and an official legal aid letter, the detention center shall arrange the meeting in a timely manner, no later than 48 hours.
For crimes endangering national security and terrorism, especially major bribery cases, defense lawyers who meet with criminal suspects in custody during the investigation must obtain permission from the investigation agency. In the above circumstances, the investigation agency shall notify the detention center in advance.
Defense lawyers can meet with criminal suspects and defendants in custody to learn about the case, provide legal advice, etc.; from the date the case is transferred for review and prosecution, they can verify evidence with criminal suspects and defendants. Defense lawyers' meetings with criminal suspects and defendants are not subject to surveillance.
The above are the relevant answers. Those who have been sentenced to fixed-term imprisonment generally have to serve their sentences in a detention center first, and then be transferred to prison after a period of time. If they perform well in prison, they can seek a commutation of their sentence. Generally, the commutation can only be reduced by two days. years, but if performance is good, three years can be reduced.