用户可以通过留言板系统进行留言，并对这些留言进行查看，针对每个留言可以进行回复。用户可以匿名留言，也可以留下自己的名字。管理员用户可以将留言删除。-Users can carry out a message through the message board system, and to view these messages, each message can reply. Anonymous users can shout, you can leave your own name. Admi