(1) and Li Ming searched Hu's room without showing a search warrant. The Criminal Procedure Law stipulates that a search warrant must be produced when conducting a search. (2) The search is not written in the record. According to the Criminal Procedure Law, a record shall be made during a search, which shall be signed or sealed by the investigator, the searched person or his family, neighbors and other witnesses. (3) He and Li Ming have no right to detain Hu's documents, MP3 and other items. The Criminal Procedure Law stipulates that articles and documents irrelevant to the case shall not be seized. The articles in this case are neither contraband nor relevant to this case, so they will not be seized. (4) Zhao Qiang and Li Ming did not make a seizure list of the seized items. According to Article 115 of the Criminal Procedure Law, the seizure list shall be made in duplicate, signed and sealed by investigators, witnesses and holders, one for the holder and one for future reference.