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-continue>
    <allimages gaicontinue="2024NewYear.jpg" />
  </query-continue>
  <query>
    <pages>
      <page pageid="42" ns="6" title="File:1.jpeg" />
      <page pageid="43" ns="6" title="File:1.png" />
      <page pageid="157" ns="6" title="File:19-04-19 压得很低跟世界末日一样的积雨云 学生餐厅前 阎沁琳.jpg" />
      <page pageid="158" ns="6" title="File:20-07-19 高层云 秦皇岛柳江盆地地质实习基地 阎沁琳.jpg" />
      <page pageid="159" ns="6" title="File:20-09-10 双虹 南山区 梁时婧.jpg" />
      <page pageid="160" ns="6" title="File:20-10-04 卷云 琳恩图书馆 王礼让.jpg" />
      <page pageid="143" ns="6" title="File:2020年组会安排.png" />
      <page pageid="142" ns="6" title="File:2020组会安排.jpg" />
      <page pageid="146" ns="6" title="File:2020组会安排.png" />
      <page pageid="155" ns="6" title="File:2021-02-XX 高积云 大梅沙海滨浴场 阎沁琳.jpg" />
    </pages>
  </query>
</api>