My Nginx setting currently has this:

 location / {
       if (!-e $request_filename){
            rewrite ^/(.*)$ https://domain.com/index.php?id=$1 redirect;
       }
 }

Basically for non-existing pages (404) it redirects user to the home page. But now I have a wordpress blog setup at https://domain.com/blog/, but any wordpress items eg. https://domain.com/blog/test also got redirected to the home page. I wonder how to fix this?