Does sending yellow messages constitute a crime?

I think that Ma's behavior has constituted a crime and should be investigated for criminal responsibility, so I reported the case to the public security organ, but the public security personnel said that it did not meet the criteria for criminal filing. The yellow text message sent from a mobile phone could not be inferred that the information was sent by the owner of the mobile phone, so it was not filed. Excuse me, doesn't sending yellow text messages constitute a crime? Readers in Zhang Li, Zhang Li: According to Article 3 of the Interpretation of Several Issues Concerning the Specific Application of Laws in Handling Criminal Cases of Making, Copying, Publishing, Selling and Disseminating Obscene Electronic Information by Using Internet, Mobile Communication Terminals and Voice Stations promulgated by the Supreme People's Court, anyone who uses the Internet or mobile communication terminals to disseminate more than 400 obscene short messages for profit shall be convicted and punished for the crime of disseminating obscene articles in accordance with the provisions of Article 364, paragraph 1, of the Criminal Law. Accordingly, sending more than 400 yellow text messages without making a profit constitutes the crime of spreading obscene articles for profit. As far as your reflection is concerned, if the total number of yellow messages sent by Ma exceeds 400, you can be convicted and sentenced for spreading obscene articles. However, it is difficult to fix the evidence of posting yellow messages, and other evidence is needed to prove that the messages were indeed sent by Ma himself. The legal part of this website