How to Upload Images

As a conclusion, the most customizable way is to just insert html tags.
The relative path is [hexoroot]/source/_posts.

Previews and Codes

He is one month old, but looks handsome for his age.

His eyes are swollen red for some reasons. I’m worried about it.

<img src="imp_name.jpg" width="100" alt="arbitrary"><br>

<img src="imp_name.jpg" width="120" height="150" align="left">
<br style="clear:left;">