Getting around at the Zhangjiajie National Park

I plan to stay at Jia Chen Guest House for 4 nights to visit Whip Stream, Yellow Stone Village,Tianzi Mountain and Yangjiajie Scenic Area in September 2019. How does one get to the various sections of the park? I plan to spend 3 days sightseeing and want to do one area per day. We are amateur lepidopterists - butterflies - is this a good area for butterflies?