You will need to install a user script manager extension to install this script.
This script can force sites to use Microsoft Yahei.
I've already write rules for many websites, so generally you won't see any square on the pages.
If you see a square on some page , please send a feedback to me and a link, a screenshot. I'll fix it ASAP.
Because more rules will make site loading slower, so if you meet bug on lots of pages, you could use this compatible version:
[Tips: Microsoft Edge CANNOT run this script correctly, please use Chrome or Firefox!]
[Thanks for your usage and feedback]