How does oppo mobile phone compress files, package them and send them?

Operation method of compressed files of OPPO mobile phone:

Enter the file management APP, hold down any file or multiple files/folders to be compressed, click the "More" button in the lower right corner, slide the bottom menu to the left, and then click "Compress". Pop up the Compressed File dialog box, change the file name and save location (or leave the default settings unchanged), and then click OK. After the compression is completed, find the compressed package according to the saved location just set, or you can find it in View compressed package.