How to get from Suzhou to Dunhuang? I have four days to play, how to arrange it?

There is definitely not enough time for Suzhou to go to Dunhuang by train. You can fly to Lanzhou. Lanzhou took the train to Dunhuang Railway Station in the evening and arrived in Dunhuang the next morning. In the morning, I visited the Mogao Grottoes, and in the afternoon, I visited Yueya Spring in Mingsha Mountain in Yumenguan. On the third day, Ya Dan Ghost Town returned to Lanzhou by train, and on the fourth day, I transferred to Lanzhou to return to Suzhou.