module.exports = function (obj) {
  var s = '<xml>' +
          '<ToUserName><![CDATA[' + obj.toUser + ']]></ToUserName>' +
          '<FromUserName><![CDATA[' + obj.fromUser + ']]></FromUserName>' +
          '<CreateTime>' + Date.now() + '</CreateTime>' +
          '<MsgType><![CDATA[text]]></MsgType>' +
          '<Content><![CDATA[' + obj.content +']]></Content>' +
          '</xml>';
  return s;
}