The sister cave of Mogao Grottoes is also one of the Dunhuang Grottoes. You can visit five caves at random, and the visit will take longer than Mogao Grottoes, and it will not be as many people as Mogao Grottoes. Drive from Dunhuang to take Liuge Expressway for about 2 hours, and pass through the earth's son mirage and other net red attractions along the way.