Yanzhi Mountains
The Yanzhi Mountains, also called Shandan Mountains, are located south of the Hexi Corridor, about 50 km southeast of the urban area of Shandan County in Gansu, China. They rise from their base of about 2,900 metres to a maximum elevation of 3,978 m and are part of the Qilian Mountains.
Etymology
There are multiple different writings of their name.The common one is said to be the phonetic equivalent of Eshi, the name of a Chanyu's wife.
Another version has the explanation that during the Five Dynasties and Ten Kingdoms period, the mountains are said to have been rich in red orchids which were used to make rouge or yanzhi for cosmetic products.
History
During the reign of Emperor Wu of Han, the general Huo Qubing led an army deep into the Hexi Corridor, occupying the Qilian Mountains and annihilating more than 30,000 enemy troops as well as capturing over 100 prisoners, including the Xiongnu chieftain's wife, Eshi. According to , the Xiongnu people at the time sang sorrowfully: "We lost the Qilian Mountains, and our livestock failed to thrive; we lost the Yanzhi Mountains, and our women lost their beauty."Emperor Yang of Sui once received envoys from 27 countries at the Yanzhi Mountains.
According to the Tangut encyclopedia Sea of Meanings, yaks raised in the Yanzhi Mountains were renowned specialties.