I really don't know where the images are stored.
But still have an idea
http link
md format relative path source/images/1.png ./../images/1.png
md format same folder
{% asset_img 1.png This is an example image %}
{% asset_img 1.png This is an example image %}
html format relative path
<img src={% asset_img 1.png This is an example image %}>
It seems that html tags are not allowed.
Official documentation: https://hexo.io/docs/asset-folders.html