The decision to file a case shall prevail. For cases that need to be filed, the undertaker shall fill in the filing report form, which includes: reporting unit, case type, number, filing time and place, casualties and property damage, case summary, undertaker's name, filling time, etc. Then make a request for filing a case, and make a decision to file a case after the approval of the person in charge of this organ and this department. Finally, the person in charge of examination and approval shall sign or seal it.