(1) Set up VPN server on Windows 7
How To Setup VPN on Windows 7 as Home Solution - YouTube
(2) Set port forwarding on your router/firewall for PPTP VPN
Make sure to forward port 1723 (TCP) and GRE (47) to your internal IP address of the Windows 7 PC.
(3) Set up VPN client on your ipad/iphone etc.
Select PPTP, enter user name and password.
Now you can access any blocked websites from China.