The original typesetting will be changed when the table of contents is automatically generated after the papers are arranged. How to solve this problem? That is, the font size and position of each title in the text will change. Set the level 123 title, and then apply the format.

Most of the reasons for your situation are that the three-level catalogue you made is not completely distinguished.

Solution. (First divide the title into 123 levels, and then set the properties for the title. Font size and line spacing. )

Wps version often has the problem of reopening after saving, and office is better.

If you have any questions, ask them. If there is no problem, please adopt it. Thank you.