Firefox 98.0 (Snap version) does not support Chinese characters. For reference, https://hk.yahoo.com/ is render as
This should be fixable by changing the default font in “Preferences”. Unfortunately, no font that support Chinese characters is listed in Settings > Language and Appearance > Font and Colours > Default Font:
I believe the source of the problem is Snap not be able to access the fonts available in the system. How can I fix this?