Big Dave,
30 day's, ...Now that's a sensible time to spend in China.
I'm sure you'll enjoy your time there and get a flavour of the life style of China, and more importantly, getting to know the real Anna....
It's a shame that others can't spend that sort of duration on there first trip to China. Not that i'm knocking anyone here, we all have our own situations and responsibilities etc, that can and do limit our available time, that we can realistically spend on our trips to China.
Anyway, all the very best on your trip, ....Savour it and Enjoy it!!!!
David....