What does it mean that the police send text messages to accept cases?

Procedures for handling criminal cases by public security organs

Article 178

After accepting a case, the public security organ shall, after examination, consider that the criminal facts that need to be investigated for criminal responsibility belong to its own jurisdiction, and shall file a case with the approval of the person in charge of the public security organ at or above the county level;

If it is considered that there are no criminal facts, or the criminal facts are obviously minor and need not be investigated for criminal responsibility, or there are other circumstances in which criminal responsibility is not investigated according to law, the case shall not be filed with the approval of the person in charge of the public security organ at or above the county level. If a complainant decides not to file a case, the public security organ shall make a notice of not filing a case and serve it on the complainant within three days. If new facts or evidence are found after deciding not to file a case, or if the original facts are found to be wrong and need to be investigated for criminal responsibility, the case shall be filed in time.