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Aerial photo taken on Dec. 24, 2020 shows people working on a marine ranch in Rongcheng, east China's Shandong Province. (Photo by Li Xinjun/Xinhua)
Aerial photo taken on Dec. 24, 2020 shows people working on a marine ranch in Rongcheng, east China's Shandong Province. (Photo by Li Xinjun/Xinhua)