说明：  emlog蓝叶背景图插件适用于emlog5.3.1版本，安装方法很简单，登陆emlog网站后台，在插件上传界面上传zip文件压缩包，上传完成后在插件管理里点击激活，最后景进入插件设置即可。
(Emlog blue background map plugin for the emlog5.3.1 version, the installation method is very simple, on the emlog website backstage in the plugin upload interface to upload a zip file compression package, upload is complete in the plug-in management click activate, finally view into the plug-in settings.)