I will be visiting Shanghai and Nantong on business at the end of July/beginning August, and would like to spend 2 days in Zhangjiajie. Is there a good train or bus service from either Shanghai or Nantong to Zhangjiajie, and if so how long would this journey take? Also can you recommend somewhere to stay in ZJJ - I do not like the big tourist hotels and would prefer to experience something more local. Lastly what would be the closest area to Shanghai or Zhangjaijie to visit the great wall of China? Thank you