How to get from Handan to Chengdu by yourself is the best and most economical way.

I suggest you take the train when you travel. As for hotel accommodation, I suggest you buy it online, which will reduce your cost a lot. See which hotel has a group purchase. As for what to play, it depends on personal preference. Jiuzhaigou is a place with beautiful scenery. See more landscapes and folk customs. I hope you have a good trip.