Yes, family members will be notified within 24 hours of being detained.

Based on the Criminal Procedure Law

Article 83: When detaining a person, the public security organ must produce a detention warrant.

After detention, the detainee shall be immediately sent to a detention center for custody, which shall not exceed twenty-four hours at the latest. Except for circumstances where notification is impossible or where notification of suspected crimes endangering national security or terrorist activities may hinder the investigation, the detainee's family members must be notified within 24 hours after detention. After the circumstances that hinder the investigation disappear, the family members of the detained person shall be notified immediately.

Article 84 The public security organs shall interrogate a detained person within twenty-four hours after being detained. When it is found that a person should not be detained, he must be released immediately and issued a release certificate.

Article 84 The public security organs shall interrogate a detained person within twenty-four hours after being detained. When it is found that a person should not be detained, he must be released immediately and issued a release certificate.

Extended information

After detention, unless there are circumstances that hinder the investigation or cannot be notified, the detained person shall be notified within 24 hours of the reason for the detention and the place of detention. The person’s family members or his/her unit.

Article 84 of the Criminal Procedure Law: Public security organs shall interrogate a detained person within twenty-four hours after detention. When it is found that a person should not be detained, he must be released immediately and issued a release certificate.

Article 96: If a case in which a criminal suspect or defendant is detained cannot be concluded within the time limits for investigation and detention, review and prosecution, first instance, and second instance stipulated in this Law, the criminal suspect or defendant shall be prosecuted. The person shall be released; if it is necessary to continue the investigation and trial, the criminal suspect or defendant may be released on bail pending trial or placed under residential surveillance.

Article 97 The people's court, people's procuratorate or public security organ shall release, cancel bail pending trial, residential surveillance or change the compulsory measures in accordance with the law against criminal suspects or defendants who have expired the statutory period for compulsory measures. measure. Criminal suspects, defendants and their legal representatives, close relatives or defenders have the right to request the lifting of compulsory measures when the statutory time limit for compulsory measures taken by the people's court, people's procuratorate or public security organs expires.

Reference: China Court Network: "Criminal Procedure Law"