The Silk Road crew explore the hottest region on the Silk Road - Turfan, once called Land of Fire: Mud lake below sea level; people's life in the hot weather - sleeping in open air on roofs; reddish mountains known as Fire Mountains; its local economy - grape harvest and drying grapes; and underground water supply system - Karez. And also they take us on a journey to Gaochang, an ancient oasis town on the Silk Road: ruins of the town; paintings and artifacts showing the cultures of Gaochang.