Modifying the registry is quite troublesome. Every time you reinstall Windows, you have to change it again, which is very cumbersome. In fact, this can be solved by using the "Export" function of the "registry editor".
For example, if you have made changes somewhere, please expand here, and then select "Register" - "Export Registration File" in the editor menu, and then save (when saving, remember to see clearly whether "Selected Branch" is selected). Right-click the saved file, and there is the option "Edit" in the menu. You can delete unnecessary key values, or add the contents of several exported files together. When editing, it should be noted that each file has the words "REGEDIT4" at the beginning, which cannot be deleted.
After reinstalling Windows, execute this file and modify it automatically.
In addition, there are many ways to change the registry, and I think the few more useful are:
Rearrange "Windows" Chinese character input method
Under HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\ Keyboard Layouts, find the corresponding code (the primary key) of each input method, and modify the key values of primary keys such as 1, 2, 3 according to the corresponding code to the required order.
Add notes to the right-click menu
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\*, create a new primary key shell, create a new primary key notepad under the shell, change notepad (default) to "&Numbers", and create a new primary key command under the notepad, change the default to "%1".
Quick display menu
HKEY_CURRENT_USER\ControlPanel\Desktop, add the string value "MenuShowDelay"; change the value to "1".