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[Admin]

Modify, But how do I do it, I have no idea, you can do it for me

You can use two bookmarks, one is named "Up One Level"
javascript: (function(){let u=u.substring(0,u.substring(0,u.length-1).lastIndexOf('/')+1);location.href=u;})();

another is named "Up Two Levels"
javascript: (function(){let u=location.href;u=u.substring(0,u.substring(0,u.length-1).lastIndexOf('/'));u=u.substring(0,u.substring(0,u.length-1).lastIndexOf('/')+1);location.href=u;})();

When you encounter infinite redirect, you can use "Up Two Levels" to skip it.