发送的 Xml 格式如下：
<xml>
  <ToUserName><![CDATA[oPTGA4rH7JXIofSXsINVuePkp8qU]]></ToUserName>
  <FromUserName><![CDATA[gh_4b4531de6d1d]]></FromUserName>
  <CreateTime>1692356634</CreateTime><MsgType><![CDATA[news]]></MsgType>
  <ArticleCount>1</ArticleCount>
  <Articles>
    <item>
    <Title><![CDATA[【补贴】一分购入5张乘车券]]></Title>
    <Description><![CDATA[【补贴】一分购入5张乘车券]]></Description>
    <PicUrl><![CDATA[https://api.lanuitbleuchina.com/imgResult/Files/LNB/apiRes647f0d32de779swva480s43.png]]></PicUrl>
    <Url><![CDATA[https://test.lanuitbleuchina.com/]]></Url>
    </item>
  </Articles>
</xml>