Comment 36 for bug 502610

Created attachment 27340
25-unhint-nonlatin.conf

changed from hinting to autohint.
I tried wqy-microhei. It seems that even hintstyle=hintslight gives poor rendering for CJK.

How to check:
$ pango-view --font='WenQuanYi Micro Hei' --text='微' --waterfall