View of Great Wall in N China's Hebei

This aerial photo taken on Aug. 31, 2023 shows a view of the Great Wall in Zunhua City of north China's Hebei Province. (Photo by Liu Mancang/Xinhua)

This aerial photo taken on Aug. 31, 2023 shows a view of the Great Wall in Zunhua City of north China's Hebei Province. (Photo by Liu Mancang/Xinhua)

This aerial photo taken on Aug. 31, 2023 shows a view of the Great Wall in Zunhua City of north China's Hebei Province. (Photo by Liu Mancang/Xinhua)

This aerial photo taken on Aug. 31, 2023 shows a view of the Great Wall in Zunhua City of north China's Hebei Province. (Photo by Liu Mancang/Xinhua)

This aerial photo taken on Sept. 1, 2023 shows a view of the Jinshanling section of the Great Wall in Luanping County, north China's Hebei Province. (Photo by Zhou Wanping/Xinhua)

This aerial photo taken on Sept. 1, 2023 shows a view of the Jinshanling section of the Great Wall in Luanping County, north China's Hebei Province. (Photo by Zhou Wanping/Xinhua)

This aerial photo taken on Sept. 1, 2023 shows a view of the Jinshanling section of the Great Wall in Luanping County, north China's Hebei Province. (Photo by Zhou Wanping/Xinhua)

This aerial photo taken on Aug. 31, 2023 shows a view of the Great Wall in Zunhua City of north China's Hebei Province. (Photo by Liu Mancang/Xinhua)