You’ll find this post in your _posts directory. Go ahead and edit it and re-build the site to see your changes. You can rebuild the site in many different ways, but the most common way is to run jekyll serve, which launches a web server and auto-regenerates your site when a file is updated.
lmaitreya
commented
3 years ago 
Welcome to Jekyll! | 泡泡糖公益
You’ll find this post in your _posts directory. Go ahead and edit it and re-build the site to see your changes. You can rebuild the site in many different ways, but the most common way is to run jekyll serve, which launches a web server and auto-regenerates your site when a file is updated.
http://localhost:4000/bubblegum/jekyll/update/2021/09/10/welcome-to-jekyll.html