The tip-off letter can be sent to the petition room of the Commission for Discipline Inspection.

The writing format of the report letter is as follows:

1. Write the word "tip-off" in the middle of the first line.

2. At the top of the second line, it says "Dear leaders of the Commission for Discipline Inspection:"

3. The text is divided into three paragraphs. First of all, state the basic situation of violation of discipline, such as the year, month and day of working in any unit, what position he holds, who is the informant and what is involved. Secondly, state the reasons for reporting, such as corruption, bribery and dereliction of duty. Finally, write down your name, company, ID number, contact number, etc.

Write "this salute" at the end, and write the date at the end.