1. Give a name to the tip-off letter, indicating the name of the reporting unit, so that the staff of the tip-off department can see the contents of the tip-off letter at a glance.

2. The text shall introduce the reported facts in detail, including the time and place of the case, the means and circumstances of the crime, the consequences caused by the case and the evidence.

Finally, you can talk about your own views on this case, put forward your own requirements, and finally write your own name.