https://bugzilla.redhat.com/show_bug.cgi?id=1531986
--- Comment #5 from Cheng-Chia Tseng pswo10680@gmail.com --- Oh, sorry that I don't find it as a Monospace font as well. :P Just checked, the Latin glyph width of AR PL UMing IS half the the Chinese one, so the "monospace" part can be reserved.
The rules which should be removed are the ones about generic "sans-serif" font family.