At the west end of the Hexi Corridor, in the desert of today's Gansu province, lies the world-famous Dunhuang Mogao Grottoes. The relic has played an important role in combining the brilliance and joy of Eastern and Western civilizations along the Silk Road. It has witnessed the rise and fall of human civilization since primitive times.

Over the years, ancient people dug rock and created murals of nearly 50,000 square meters recording life scenes and religious beliefs in the quiet caves, among them are vivid depictions of competitive sports.

How does this heritage relate to sports and the Olympics? Watch to find out more.