An aerial drone photo taken on April 10, 2026 shows a section of ancient Great Wall after rain in Qian'an City of north China's Hebei Province. (Photo by Liu Mancang/Xinhua)

This photo taken on April 10, 2026 shows a view of Jinshanling section of the Great Wall after rain in Luanping County, Chengde City of north China's Hebei Province. (Photo by Zhou Wanping/Xinhua)

This photo taken on April 10, 2026 shows a view of Jinshanling section of the Great Wall after rain in Luanping County, Chengde City of north China's Hebei Province. (Photo by Zhou Wanping/Xinhua)

An aerial drone photo taken on April 10, 2026 shows a section of ancient Great Wall after rain in Qian'an City of north China's Hebei Province. (Photo by Liu Mancang/Xinhua)

An aerial drone photo taken on April 10, 2026 shows a section of ancient Great Wall after rain in Qian'an City of north China's Hebei Province. (Photo by Liu Mancang/Xinhua)

This photo taken on April 9, 2026 shows a view of Jinshanling section of the Great Wall after rain in Luanping County, Chengde City of north China's Hebei Province. (Photo by Zhou Wanping/Xinhua)

This photo taken on April 9, 2026 shows a view of Jinshanling section of the Great Wall after rain in Luanping County, Chengde City of north China's Hebei Province. (Photo by Zhou Wanping/Xinhua)