In order to get Asian Characters to render properly on ArchLinux you need to install a font which supports them. Even if you cannot read any of the characters I find it useful to have them installed to get wikipedia articles on geographical locations to render properly.
In order to cover most of Asia I installed the following fonts:
- adobe-source-han-serif-cn-fonts
- adobe-source-han-serif-jp-fonts
- adobe-source-han-serif-kr-fonts
- adobe-source-han-serif-otc-fonts
- adobe-source-han-serif-tw-fonts
sudo pacman -S adobe-source-han-serif-cn-fonts adobe-source-han-serif-jp-fonts adobe-source-han-serif-kr-fonts adobe-source-han-serif-otc-fonts adobe-source-han-serif-tw-fonts
Do note that this only includes the serif variant of the fonts. But that is enough for me.
To test the fonts simply restart your browser after installing the mentioned fonts and go to this site: https://en.wikipedia.org/wiki/Help:Multilingual_support_(East_Asian)
To install the sans-serif fonts instead:
Installing both: