This aerial panoramic photo taken on July 13, 2023 shows Jiayu Pass, a famed part of the Great Wall, in Jiayuguan City, northwest China's Gansu Province. (Xinhua/Chen Zhonghao)

LANZHOU, Dec. 10 (Xinhua) -- Gansu Province is home to multiple sections of the Great Wall that add up to 3,654 kilometers in length. The Hexi Corridor, a critical part of the ancient Silk Road winding through the south of the province, boasts more than 1,400 kilometers of the Wall built in the Han Dynasty (202 BC-220 AD) and over 1,200 kilometers erected in the Ming Dynasty (1368-1644). Gansu is, therefore, dubbed "an open-air museum of the Great Wall."