Turpan

Turpan is the lowest Silk Road oasis city, sitting 154 meters below sea level in the Tarim Basin, making it China's hottest and driest locale. Its karez irrigation tunnels, totaling 5,000 kilometers, are 30% longer than the average ancient irrigation system, sustaining grape cultivation that produces 80,000 tons annually. Outperforming #4 Kashgar in agricultural innovation, Turpan's Gaochang ruins span 200 hectares and date to the 1st century AD. The city's unique climate and engineering marvels offer a distinct perspective on Silk Road survival, with a UNESCO-recognized water system that still functions today.