Editing state of word

Change the uneditable word to editable state
1. Open the word file and save the file as xml format
2. Find <w:documentProtection w:edit="read-only" w:formatting="on" w in the xml file :enforcement="on" w:unprotectPassword="9D77CE88"/> This code is deleted and saved
. 3. Change the suffix of the modified xml file directly to doc. 
4. The file is editable.
Change the editable word to non-editable state
1. Find the place to be inserted in the xml file of the template and split it here <w:defaultTabStop
2. The code to be inserted <w:documentProtection w:edit="read-only " w:formatting="on" w:enforcement="on" w:unprotectPassword="9D77CE88"/>