Bus from Wulingyuan National Park to Zhangjiajie West Train Station (High speed train).

I hope you can help us. We will be in July in Zhangjiajie and Wulingyuan.
Could you tell us, where we could find bus lines and timetable?
On the 17th we have to go in the late evening from Wulingyuan National Park to Zhangjiajie West Train Station (High speed train).
Thank you very much.
Anke from Germany