One can hardly imagine that, when our forefathers chose to carve a cave at Dunhuang 1,600 years ago, the site was a stretch of oasis with lush grass and trees north of the Great Wall.

• 谁都很难想象，一千六百年前，先民们在敦煌选址开窟时，这里曾经是一片草木扶疏的塞外绿洲。