It seems to be quite hard to bypass Great Firewall of China using VPN. Tried it once and it didn't work.
http://www.theguardian.com/technology/2014/jan/21/privacy-tools-censorship-online-anonymity-tools

In Vietnam, VPN is used by 38% of the online population and in Brazil and Thailand 36%. Mexico, India and China all reported use by an estimated 34% of the population that has access to the internet, with the UAE and Argentina on 32%.

so only dummy's are stoped by firewals.