1. Open any folder on your computer and click "Folder Options" under the Tools menu.
2. Then uncheck the option "Hide extensions of known file types" in the advanced settings area of the viewing page.
3. Then click "OK" button below to confirm.
4. Then the suffix name will be displayed, as shown in the figure.
5. Then click this file with the right mouse button and click Add to "xxxx" in the menu. Rar "(t) option. The premise is that winrar software is installed on the computer.
6. After completing the above settings, you can meet the requirements of the questioner.