The desktop.ini is a Windows operating system generated file that saves all visual parameters in a folder. Any changes done in the appearance will be reflected in the desktop.ini file.
I just want to know what this file: desktop.ini is?
It is a system file generated by Windows and can save visual parameters in a folder: you can change the appearance of a folder and put a flower instead. In this case, it will create a desktop.ini file pointing to the directory that is represented by a flower, not a folder.