我邀请的朋友没有收到邀请邮件，怎么办？
访问您的邀请系统，底部有Hash值 然后把下面这个链接告诉您的朋友即可：
http://www.hdarea.co/signup.php?type=invite&invitenumber=32位的Hash值

If your friends having to trouble receive invitation. You can send them the hash link to register. You can find it at the Invite System. The HASH was created when you sent an invitation.
http://www.hdarea.co/signup.php?type=invite&invitenumber=Hash