On the note of VPNs, I agree with Mrog. Get one BEFORE you enter China. Not having access to Google is an absolute nightmare and most VPN sites are blocked on enter Chinese Internet. You could resort to using Bing, but who in their right mind would do that… Beijing is currently undergoing some political meetings, so a bunch of VPNs got struck down. However, those should be done by the time you get here. As far as specific VPNs, I’m using PureVPN and Lantern, as a backup. Lantern is open-source, but reliable so far.
Cheers!