Use free WiFi in airport (via DNS tunneling)

There is a tutorial for this included in this question:

http://security.stackexchange.com/questions/124674/can-ssh-tunneling-over-dns-tunnel-work-in-china-to-use-free-wifi-at-airport#

It works mostly in the world but it fails in China.

Does someone here know how to bypass it in mainland of China to get rid of GFW, and access free WiFi via DNS tunneling?

You are the best! Thanks!