If you come to China with a foreign SIM card and use data roaming, there are no firewall restrictions there. At least that's what I know from a few years ago.

If you come to China with a foreign SIM card and use data roaming, there are no firewall restrictions there. At least that's what I know from a few years ago. One trick travellers had was to get a SIM card from Hong Kong (again, before the crackdowns) because the roaming prices inside China were good (I can't remember if it was non-existant) but the Internet was not censored...