It begins in the east at Shanhaiguan in Hebei province, goes through 15 provinces, cities and autonomous regions, and ends at Jiayuguan in Gansu province to the west.
The Yeguang Cup, literally "the Glittering Night Cup," is a special jade craftwork from Jiuquan in the province of Gansu in Northwest China. Jiuquan is an ancient town with a 2,000-year history.