My classmates traveled from Beijing to Dunhuang. She will go to Xiamen from Lanzhou because she is too tired by train. Is there a cost-effective route?

Hello, at present, in railway transportation, the train is the cheapest, and the funds are limited, so you can't fly. There is no EMU in Lanzhou Station, and the train takes about the same time. Actually, it's not bad to buy a sleeper for the train. If you take the bullet train, you can consider transferring from Nanjing.

K378/K375B air-conditioned express Lanzhou-Nanjing 01:22-01:491day 27 minutes hard seat 2 13

D3 135/D3 138 Nanjing-Xiamen North 08:16-19: 5011hour 39 minutes second-class soft seat 422 first-class soft seat 506