What does it mean to report an arrest after staying in a detention center for one month?

In layman's terms, the public security organ thinks that he constitutes a crime and applies to the procuratorate for arrest. article 66 of the criminal procedure law stipulates that when a public security organ requests the arrest of a criminal suspect, it shall write a approval of arrest, together with case files and evidence, and submit it to the people's procuratorate at the same level for examination and approval. When necessary, the people's procuratorate may send people to participate in the handling of major cases by public security organs.