An aerial drone photo taken on Aug. 11, 2024 shows a section of the Great Wall shrouded in clouds in Xinglong County of Chengde City, north China's Hebei Province. (Photo by Liu Mancang/Xinhua)

An aerial drone photo taken on Aug. 11, 2024 shows a section of the Great Wall shrouded in clouds in Xinglong County of Chengde City, north China's Hebei Province. (Photo by Liu Mancang/Xinhua)

An aerial drone photo taken on Aug. 11, 2024 shows a section of the Great Wall shrouded in clouds in Xinglong County of Chengde City, north China's Hebei Province. (Photo by Liu Mancang/Xinhua)

An aerial drone photo taken on Aug. 11, 2024 shows a section of the Great Wall shrouded in clouds in Xinglong County of Chengde City, north China's Hebei Province. (Photo by Liu Mancang/Xinhua)

An aerial drone photo taken on Aug. 11, 2024 shows a section of the Great Wall shrouded in clouds in Xinglong County of Chengde City, north China's Hebei Province. (Photo by Liu Mancang/Xinhua)