Google Fonts also isn’t blocked but I recall it being hit-and-miss in terms of responsiveness when I was working on a website that targeted Chinese audience a few years ago. However, I just tried resolving fonts.googleapis.com and fonts.gstatic.com on a Chinese server of mine, and they both resolve to a couple of Beijing IP addresses belonging to AS24424 Beijing Gu Xiang Information Technology Co. Ltd., so it’s probably very much usable now.