First, our mobile phone downloads jelly beans from the app store, installs them and opens them. Second, after entering the software, we can search for dances or songs to see the square dance. Third, find the right square dance and click download. Fourth, choose songs and videos to download. 5. Prompt the downloaded file to be viewed in "My-My Download". 6. We can see that all the files we downloaded are here, and the specific download location is under the storage/storage/emulated/0/ccdownload folder. Seventh, we return to the desktop and find the file manager-all files. Eight, we go back to the desktop, find the file manager-all files-CCDownload, and you can see the square dance video we downloaded. 9. Click Edit in the upper right corner, select the file to send to the USB flash drive, and click Send. Ten, choose my computer. Eleven, the computer can be transferred to the USB flash drive after receiving it.