You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20090701131925" timestamp="2009-07-01T13:19:25Z" ns="0" title="Books" />
        <page value="20090701132242" timestamp="2009-07-01T13:22:42Z" ns="0" title="Articles" />
        <page value="20090701132458" timestamp="2009-07-01T13:24:58Z" ns="0" title="Consulting and Education" />
        <page value="20090701132705" timestamp="2009-07-01T13:27:05Z" ns="0" title="Courses" />
        <page value="20090701133129" timestamp="2009-07-01T13:31:29Z" ns="0" title="About Us" />
        <page value="20110201071357" timestamp="2011-02-01T07:13:57Z" ns="0" title="Online Chinese" />
        <page value="20110201071551" timestamp="2011-02-01T07:15:51Z" ns="0" title="Temp" />
        <page value="20240620183741" timestamp="2024-06-20T18:37:41Z" ns="0" title="Main Page" />
      </results>
    </querypage>
  </query>
</api>