Qt - Html Auto code generated -- span inside a paragraph

I am trying to generate an Html code using Qt XML library. I need to insert an span inside an paragraph.

Qt code :--

      //Create paragraph node
      nodeChildNameTemp = "p";
      NodeElementChildTemp = htmlDomDocument.createElement(nodeChildNameTemp);
      NodeElementChildTemp.setAttribute("class","Final_Marks");
      stringTxtNode = "Total :  <span id=\"" + TextDevicetxtId + "\">" " 0" "</span>";
      textNode = htmlDomDocument.createTextNode(stringTxtNode);
      //Append txt node
      NodeElementChildTemp.appendChild(textNode);
      //Append paragraph div to room div
      NodeElementTemp.appendChild(NodeElementChildTemp);

Expected Result :--

<p class="Final_Marks">Total : <span id="My_Marks_Txt_ID"> 0</span></p>

Actual Result :--

<p class="Final_Marks">Total : &lt;span id="My_Marks_Txt_ID"> 0&lt;/span></p>

For "<" sign xml is adding "<" Do these both lines have same meaning if i open my html page or this is an error ?