Tourists visit the Mogao Grottoes, a UNESCO World Heritage Site boasting rich collections of Buddhist artworks, in Dunhuang City, northwest China's Gansu Province, Dec. 15, 2023.

The ancient Silk Road in Gansu section is home to many world heritage sites, including Mogao Grottoes and Jiayu Pass. With better tourism policies and winter landscapes, the Silk Road tour has become a hit among tourists. (Xinhua/Jia Zhao)