Transport from Zhangjiajie to Chengdu

My friend and I are hoping to get to Chengdu from Zhangjiajie and have been looking at transport options.

I have used the China rail website and trip.com to find rail transport for this leg, however I can't find any high speed rail options. There are however flights, but they depart at 2230 at night.

Has anyone traveled by rail from ZJJ to Chengdu - if so how did you guys make it work?