In addition to scribbling and scrawling in dirt on the murals, they did their cooking in the grottoes and made fire to keep warm, making a great many works of art of unequaled beauty a mass of black soot.

• 他们除了在壁画上涂抹各种下流图画文字外，还每天在洞中支锅做饭，生火取暖，不少绝代佳作被熏成一团漆黑。