From Xiahe to Jiuzhaigou

Hello!
I am going to travel over china at the end of july with my family.
I heard that they was a way to do xiahe - JZG in 1 day by bus.
It would be to take a local bus from xiahe to hezuo and then a long distance bus from hezuo to JZG.
Would anyone know the timetables for the bus hezuo - JZG? Or where can I find it?
Thank you very much,
Léa