Originally Posted by
moondog
There are many flights between Changsha and Shenzhen, so I assume you should be able to switch to one that does not entail a 6 hour layover.
But, if your schedule is set in stone, I recommend visiting Changsha itself (excellent dining options).
Interestingly there is only one CZ flight that day...
Going into town may be an option indeed. Nicer than staying at the airport for sure... We arrive around 0700 and leave at 1300 so timings are not extremely ideal for dining, and actually maybe even a bit short to go into town, but aparently there is Maglev train now from the airport to the train station.