How to get from Changsha to Jiuzhaigou is more cost-effective, and what are the better routes?

The journey is divided into two parts: from Changsha to Chengdu and from Chengdu to Jiuzhaigou. You can choose the train in the first section, and there are two choices in the second section: car and plane. Generally speaking, if economic conditions permit, flying is more suitable, which can save time and physical strength. The advantage of the car is that it is cheap and you can visit the scenery along the way, especially the 203 National Road. But the problem is that the time is too long, and it basically takes 10 hour. The bumpy road will consume a lot of physical strength, and the road condition is a big problem. Passing through earthquake-prone areas, mudslides and other natural disasters will lead to accidents.