Xiaomi MIUI 7: In which directory/folder are your hidden files & folders stored?
When you hide a file or folder from the File Explorer, the MIUI 7 system will encrypt this file or folder, and then save it to the /FileExplorer/.safebox subfolder.
The .safebox subfolder isn’t visible from the File Explorer app. But, you can download the ES File Explorer to view the .safebox subfolder.