The Silk Road crew travel to Khara-khoto, 250 miles from the oasis of Jiu-chang, near the Qilian Mountains in the Gobi Desert. Buried by the Gobi sands, the lost city was unearthed by the Russian explorer Koslov, who took its artworks to the Hermitage. A person of Tangut tribe tells a story about the last king of Khara-khoto - Batir. Khara-khoto was rich and prosperous before its ruins by the the Mongol invasion of the thirteenth century. The episode focuses on why and how the ancient city got ruined.
