多应用,配合nginx,和大佬发布的域名绑定疑惑

upstream webman {
    server 127.0.0.1:8787;
}
server {
    listen 80;
    server_name www.hopewebman.com hopewebman.com ;

    root /www/wwwroot/hope_webman/public;

    location / {
       proxy_set_header X-Real-IP $remote_addr;
       proxy_set_header Host $host;
       if (!-f $request_filename){
          rewrite ^/(.*)$ /pc/$1 break;
          proxy_pass http://webman;
       }
    }
}