GreatFirewall

We didn't expect Tor wouldn't be blocked in China for a long time before it became true days ago.  We've got a lot of users' reports on that from different regions in China about torproject.org was blocked by Great Firewall system in China.  
McFred's Blog said:

torproject.org is the official Tor(The Onion Router) web site, found recently been blocked by China's national firewall, also known as Great Firewall.
Trace route from Beijing, China shows the destination is unreachable, seems they changed the route table on the router at IP 202.97.66.37, refuse connection to Tor web site.

Jacky talked on his Chinese blog:

Just there's an online survey on Tor usage in China, I found Tor official site has been "harmonized" when I was curious about how it said about any news...

Fons said on his "China Herald" blog:

Over the past year most 'blocks' of foreign websites had disappeared and made way for more sophisticated filtering techniques. Blocking well-known proxies seems to mean the relative tightening of the censorship at a time when China had promised more openness at the internet for its foreign guests. read more »