Is there a bus from Xian to Longnan and Longnan to Jiuzhaigou?

There is only one bus from Xian Bus Station, opposite to Xian Railway Station, to Longnan, leaving at 10:30. The bus price is CNY193 and the duration is around 10h.
You can take a bus from Longnan Wudu Bus Station to JZG and there is also one bus at 8:30. It costs CNY80 or so and takes 6h.