I have using English undering the Chinese. 我是中国的用户，现在点击火狐的插件中心提示错误，手机和电脑上都有这个问题。但当我使用代理时就可以进了，所以我来确认一下是不是大家所说的那样：中国防火墙不许我们使用火狐的服务。就是被和谐了（或者被墙了）。PS：谷歌也有同样问题。 好吧(∩_∩)，下面的英国历史我已经尽力了，大家别笑我，如果有错误的话。 有解决办法也要分享一下，免费的VPN也是很欢迎的 I am from China.I can't enter thePlugin center in China now（Bose android and computer.But while I using the VPN to surfing the Internet I can enter it normal! I just want to make sure that if China dont allowed us using the FireFox in China.（In Chinese we call it as 和谐、河蟹or被墙了.）I may just want to sure that or tell you about that Chinese government dont allowed Chinese using the Google and FireFox. PS：Google has the same problem in a long time（till now!） I have to using the VPN to using my gmail .Someone in China said that Chinese government dont allowed Google to show something that Chinese government dont want to show it to other Chinese. OK.That's all. Waiting for you to answer me. Thank you!