Aerial photo shows the magnificent landscape of a section of the Great Wall in Jinlong town, Longquanyi district, Chengdu city, Sichuan province, May 19, 2021. The 1,680-meter Jinlong Great Wall is located in the Jinlong Lake Scenic Area. [Photo/China News Service]

Aerial photo shows the magnificent landscape of a section of the Great Wall in Jinlong town, Longquanyi district, Chengdu city, Sichuan province, May 19, 2021. The 1,680-meter Jinlong Great Wall is located in the Jinlong Lake Scenic Area. [Photo/China News Service]

Aerial photo shows the magnificent landscape of a section of the Great Wall in Jinlong town, Longquanyi district, Chengdu city, Sichuan province, May 19, 2021. The 1,680-meter Jinlong Great Wall is located in the Jinlong Lake Scenic Area. [Photo/China News Service]

Aerial photo shows the magnificent landscape of a section of the Great Wall in Jinlong town, Longquanyi district, Chengdu city, Sichuan province, May 19, 2021. The 1,680-meter Jinlong Great Wall is located in the Jinlong Lake Scenic Area. [Photo/China News Service]