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="20220617064340|Levoglucosan.jpg" />
  </query-continue>
  <query>
    <allimages>
      <img name="2024NewYear.jpg" timestamp="2023-12-29T09:00:50Z" user="Atmoschem" url="http://atmoschem.org.cn/images/2024NewYear.jpg" descriptionurl="http://atmoschem.org.cn/index.php?title=File:2024NewYear.jpg" ns="6" title="File:2024NewYear.jpg" />
      <img name="Li_et_al_2023_2.png" timestamp="2023-10-30T05:24:42Z" user="Atomoschem" url="http://atmoschem.org.cn/images/Li_et_al_2023_2.png" descriptionurl="http://atmoschem.org.cn/index.php?title=File:Li_et_al_2023_2.png" ns="6" title="File:Li et al 2023 2.png" />
      <img name="Li_et_al_2023.png" timestamp="2023-10-30T05:24:29Z" user="Atomoschem" url="http://atmoschem.org.cn/images/Li_et_al_2023.png" descriptionurl="http://atmoschem.org.cn/index.php?title=File:Li_et_al_2023.png" ns="6" title="File:Li et al 2023.png" />
      <img name="Wang_et_al_2022_pic.jpg" timestamp="2023-10-30T02:57:33Z" user="Atomoschem" url="http://atmoschem.org.cn/images/Wang_et_al_2022_pic.jpg" descriptionurl="http://atmoschem.org.cn/index.php?title=File:Wang_et_al_2022_pic.jpg" ns="6" title="File:Wang et al 2022 pic.jpg" />
      <img name="Feng_et_al_2023_ship_COVID.jpeg" timestamp="2023-10-27T12:20:29Z" user="Atomoschem" 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="Tianci_Jiang.jpeg" timestamp="2023-08-26T07:48:02Z" user="Atomoschem" url="http://atmoschem.org.cn/images/Tianci_Jiang.jpeg" descriptionurl="http://atmoschem.org.cn/index.php?title=File:Tianci_Jiang.jpeg" ns="6" title="File:Tianci Jiang.jpeg" />
      <img name="Group202207.jpg" timestamp="2022-07-05T08:16:13Z" user="Atmoschem" url="http://atmoschem.org.cn/images/Group202207.jpg" descriptionurl="http://atmoschem.org.cn/index.php?title=File:Group202207.jpg" ns="6" title="File:Group202207.jpg" />
      <img name="Mcs_concept.jpg" timestamp="2022-06-19T07:08:22Z" user="Atmoschem" url="http://atmoschem.org.cn/images/Mcs_concept.jpg" descriptionurl="http://atmoschem.org.cn/index.php?title=File:Mcs_concept.jpg" ns="6" title="File:Mcs concept.jpg" />
      <img name="WRF_GC_v1_structure.png" timestamp="2022-06-19T07:04:45Z" user="Atmoschem" url="http://atmoschem.org.cn/images/WRF_GC_v1_structure.png" descriptionurl="http://atmoschem.org.cn/index.php?title=File:WRF_GC_v1_structure.png" ns="6" title="File:WRF GC v1 structure.png" />
      <img name="Bth_ozone_adjoint.jpeg" timestamp="2022-06-17T06:45:46Z" user="Atmoschem" 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" />
    </allimages>
  </query>
</api>