I'll be visiting in late June, and I was wondering if there is any bus from Nanxun to Hangzhou?

Phyllis, you can take a bus from Nanxun Bus Station to HZ. The bus is available from 6:10 to 17:20 every 40min or so. The bus fare is CNY40 and you will arrive in HZ in 2h.
It is suggested you take a high speed train to reach Huangshan, but there is only one train leaving HZ East Railway Station at 9:50 and the train ride is 3.5h.

Hi Leslie!

Thank you very much for your help. I was wondering where you get these information from? Is there perhaps a website that I can refer to?

Thanks again!

Well, the website doesn't have English version. If you have Chinese friends, you can ask them to check the information. :)