like the title, I am from China, I tried to visit the URL: http://dmoz.org for several times, but I failed to open it, then I used proxy server: 222.43.34.94:80 , but still the same. I don't know why.
Most likely you won't be able to access it (due to the reason giz gave), but this article from 2004 gives a pretty good summary about the current situation with internet access in china.