Haozhe Xie

NOTE: For the vistors from outside Mainland China, they will still use links to the original site instead of the mirror site.
As we all know, the loading time becomes longer for Chinese vistors because of the GFW in China. 
The vistors are always waiting for loading fonts from <a href="http://fonts.googleapis.com" rel="nofollow ugc">fonts.googleapis.com</a> and avatars from <a href="https://gravatar.com" rel="nofollow ugc">Gravatar</a> for a long time.
To solve this problem, we develop this plugin and replace the google libraries (<code>//*.googleapis.com</code>) with the service provided by USTC and Cat Networks for Chinese users. As for the gravatar service, the links are replaced with <code>//cn.gravatar.com/avatar</code> or other alternative mirrors. You can change these mirror site URLs in the settings page.
After enabling this plugin, the user experience becomes much better for the vistors from Mainland China.

Google Font Fix

Fix Google (//.googleapis.com/) and Gravatar service(//gravatar.com) for users in China.

耗子

使用各大CDN厂商提供的API自动清理节点缓存，同时提供前台静态资源公共CDN加速。 
此插件搭配静态缓存插件使用效果更佳。 
插件发布&&使用教程链接：https://hzbk.net/archives/763.html

WP-CDN-Yes – WordPress CDN 插件

好吧，摊牌吧，我是刷好评的，实际上这个插件我也没用过

Google Font Fix vs WP-CDN-Yes – WordPress CDN 插件