For the comment system for this blog, I tried multiple ways in enabling this function. Since this blog would post content in both English and Chinese, I would expect this comment system to be viable all over the world, therefore when I looked at the built-in comments systems, disquis and a few other options were ruled out as they are not usable in China. I first tried LiveRe and it turns out that it loads very slow in China. As for ChangYan, the aethetic design of the comment section is kind of old fashioned and (in my opinion) does not go well with the theme of this blog. Therefore I decide to go over some alternatives. The first came into my eyes is Waline. I have used Waline four years ago when I created my first blog and it worked out fine. However, the deployment method now uses Vercel which need to resolve my domain on Valine. However, as I am using cloudflare at the moment so this is not the best method for me. Eventually I found another popular comment system known as giscus, which rely on discuss section of github for the comments. Fortunately there is plugin for Next theme I am using (very appreciate the effort of developers) up to date (unlike many others which stop updating years ago), and this turns out to be both elegantly designed and I think, to be the most suitable comment system for my blog. Although github loading is not stable in China, comment section is easily loaded and even if people cannot log in their github account, they can still see other comments. Furthermore, it gives clear notice when people commented and is easy to manage with the comment section. For the anti-robot measures, I followed the instruction of the instructions on https://2x.nz/posts/giscus-akismet/ which reduces the chance of having advertisement robots posting comments in the comment section.