@Kni 确实要求个人备案不能有交互内容，如留言。我备案的域名是 www.2heng.xin，实际上这个域名我没有放任何东西，而子域名没有明确的规定，所以可以钻这个空子用子域名放其他东西。
Why is this step necessary? hello.2heng.xin might not be the server where you are registered, so we need to redirect you to your home server first. Don't have an account? You can sign up here
hello.2heng.xin
