I suppose the “Great Firewall of China” probably will block access for some of that but still it highlights the difficulty government types have in restricting information.
Also of interest is that by setting up a proxy on the outside of the firewall and encrypting the traffic between the browser on the inside of the firewall and the proxy on the outside it is trival to bypass the firewall and get access to all the internet. The firewall would have to block all proxies or all forms of encryption and stegonography (very tough problem) to be effective.
As with illegal recreation drugs in the U.S., illegal handguns in the U.K., and all other goods if there is a market it will be supplied by someone making a profit. Information in China will be the same.