The Hexi Corridor is a long, narrow passage stretching for some 1000 kilometers from the steep Wushaolin hillside near the modern city of Lanzhou to the Jade Gate Zhihong Wang, Dust in the Wind: Retracing Dharma Master Xuanzang's Western Pilgrimage, 經典雜誌編著, 2006 at the border of Gansu and Xinjiang.