Article 70 of the Criminal Procedure Law of People's Republic of China (PRC) stipulates: "When the public security organ thinks that the people's procuratorate's decision not to approve the arrest is wrong, it may request reconsideration, but it must immediately release the detained person. If the opinion is not accepted, it may be submitted to the people's procuratorate at the next higher level for review. The people's procuratorate at a higher level shall immediately review it, make a decision on whether to change it, and notify the people's procuratorate at a lower level and the public security organ to implement it. "
If you are not satisfied with the decision not to approve the arrest, you may request the investigation organ to apply to the procuratorate for reconsideration. Because the procuratorate refuses to approve the arrest on the grounds of insufficient evidence, the public security organ can further collect evidence, and then the public security organ can apply to the procuratorate for arrest.