Gunnar mentioned that the Noto Sans CJK JP has the first priority in a fc-match listing, and there is no reason to prefer Chinese over Japanese just for the sake of it.
And as Dhoulmagus mentioned above, rendering non-lang-specified CJK content with per glyph "intelligently" is nearly impossible...
For the "门" issue Dhoulmagus mentioned, please see: /bugs.launchpad .net/ubuntu/ +source/ language- selector/ +bug/1468027
https:/
Gunnar mentioned that the Noto Sans CJK JP has the first priority in a fc-match listing, and there is no reason to prefer Chinese over Japanese just for the sake of it.
And as Dhoulmagus mentioned above, rendering non-lang-specified CJK content with per glyph "intelligently" is nearly impossible...