The best route from Langzhong to Qingdao is not by plane.

I just went to Qingdao a few days ago ... If I don't want to change trains, I will take a bus from Langzhong to Guangyuan, where there is only one direct train to Qingdao, and it takes a long time to get on and off, and it's all in the middle of the night. The rest will be transferred by train. For all kinds of transfers, it is recommended to take a train from the nearest place to Jinan. It is good to have a trip to Dazhou, and then go to Qingdao from Jinan. The train is fast and there are many cars.

PS coach must buy a sleeper in advance, the hard seat is too uncomfortable.