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 aicontinue="Group.jpg" />
  </query-continue>
  <query>
    <allimages>
      <img name="Bth_ozone_adjoint.jpeg" timestamp="2022-06-17T06:45:46Z" url="http://atmoschem.org.cn/images/Bth_ozone_adjoint.jpeg" descriptionurl="http://atmoschem.org.cn/index.php?title=File:Bth_ozone_adjoint.jpeg" ns="6" title="File:Bth ozone adjoint.jpeg" />
      <img name="Curiesmall.PNG" timestamp="2013-09-23T00:17:14Z" url="http://atmoschem.org.cn/images/Curiesmall.PNG" descriptionurl="http://atmoschem.org.cn/index.php?title=File:Curiesmall.PNG" ns="6" title="File:Curiesmall.PNG" />
      <img name="DSC02787_1.jpg" timestamp="2013-10-22T07:25:07Z" url="http://atmoschem.org.cn/images/DSC02787_1.jpg" descriptionurl="http://atmoschem.org.cn/index.php?title=File:DSC02787_1.jpg" ns="6" title="File:DSC02787 1.jpg" />
      <img name="Enso_impacts.png" timestamp="2019-11-19T03:54:02Z" url="http://atmoschem.org.cn/images/Enso_impacts.png" descriptionurl="http://atmoschem.org.cn/index.php?title=File:Enso_impacts.png" ns="6" title="File:Enso impacts.png" />
      <img name="Feng_et_al_2023_ship_COVID.jpeg" timestamp="2023-10-27T12:20:29Z" url="http://atmoschem.org.cn/images/Feng_et_al_2023_ship_COVID.jpeg" descriptionurl="http://atmoschem.org.cn/index.php?title=File:Feng_et_al_2023_ship_COVID.jpeg" ns="6" title="File:Feng et al 2023 ship COVID.jpeg" />
      <img name="GM_Fall2019.jpg" timestamp="2019-09-02T07:36:15Z" url="http://atmoschem.org.cn/images/GM_Fall2019.jpg" descriptionurl="http://atmoschem.org.cn/index.php?title=File:GM_Fall2019.jpg" ns="6" title="File:GM Fall2019.jpg" />
      <img name="GM_Fall2019_0903.png" timestamp="2019-09-03T03:32:31Z" url="http://atmoschem.org.cn/images/GM_Fall2019_0903.png" descriptionurl="http://atmoschem.org.cn/index.php?title=File:GM_Fall2019_0903.png" ns="6" title="File:GM Fall2019 0903.png" />
      <img name="GM_fall2019.10.10.png" timestamp="2019-10-12T09:59:28Z" url="http://atmoschem.org.cn/images/GM_fall2019.10.10.png" descriptionurl="http://atmoschem.org.cn/index.php?title=File:GM_fall2019.10.10.png" ns="6" title="File:GM fall2019.10.10.png" />
      <img name="GM_fall2019.11.22.png" timestamp="2019-11-22T06:57:14Z" url="http://atmoschem.org.cn/images/GM_fall2019.11.22.png" descriptionurl="http://atmoschem.org.cn/index.php?title=File:GM_fall2019.11.22.png" ns="6" title="File:GM fall2019.11.22.png" />
      <img name="GM_fall2019.png" timestamp="2019-09-16T08:16:07Z" url="http://atmoschem.org.cn/images/GM_fall2019.png" descriptionurl="http://atmoschem.org.cn/index.php?title=File:GM_fall2019.png" ns="6" title="File:GM fall2019.png" />
    </allimages>
  </query>
</api>