Mogao, Echoing-sand, crescent lake in 1 day

Dear Ivan, you can cover them in one day. You may spend the morning at the caves. Then, take a taxi to Echoing-sand Mountain and the Crescent Lake, which are located in the same place. You may spend the afternoon there. The taxi fare may be around CNY 50.

Understand that you just can't simply show up, get tickets, and go to the show and the caves. There are very specific start times (usually every two hours) when you are admitted to the tours beginning at the center. Miss the start time and you will just languish until the next one.