Terra-Cotta Warriors in Xi’an, Northwest China’s Shaanxi Province Photo: CFP

Mogao Grottoes in Dunhuang, Northwest China’s Gansu Province Photo: CFP

Jiayu Pass in the city of Jiayuguan, Northwest China's Gansu Province Photo: CFP

Qinghai Lake in Northwest China's Qinghai Province Photo: CFP

Danxia landform in Zhangye, Northwest China's Gansu Province Photo: CFP

Yadan landform in Hami, Northwest China's Xinjiang Uyghur Autonomous Region Photo: CFP

Tianshan Mountain near Urumqi, Northwest China’s Xinjiang Uyghur Autonomous Region Photo: CFP

Huoyan (Flaming) Mountain in the Turpan Basin, Northwest China's Xinjiang Uyghur Autonomous Region Photo: CFP