It turns out that Win 7 can use the heavy name to merge folders

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in the previous operating system, if the file is renamed If the folder has the same name as the existing folder, the system will reject the rename operation. However, in W7, you can deliberately rename the folder with the existing folder by renaming it.

For example, there are two folders with names 1 and 2 in the D drive. Now you have to move all the files in the 1 folder to the 2 folder and delete the 1 folder; You can do this in W7: rename the 1 folder to 2, and in the "Confirm Folder Replacement" dialog box that pops up, click "Yes". (When there is a file with the same name in the 1 folder in the 2 folder, the system will prompt to rename the file with the same name)