This photo taken on October 19, 2019 shows the autumn scenery at the Mutianyu section of the Great Wall in Huairou District, Beijing. (Photos: IC)

This photo taken on October 19, 2019 shows the autumn scenery at the Mutianyu section of the Great Wall in Huairou District, Beijing.

This photo taken on October 19, 2019 shows the autumn scenery at the Mutianyu section of the Great Wall in Huairou District, Beijing.

This photo taken on October 19, 2019 shows the autumn scenery at the Mutianyu section of the Great Wall in Huairou District, Beijing.