People view whooper swans in the national nature reserve for whooper swans in Rongcheng City, east China's Shandong Province, Nov. 28, 2021. (Photo by Li Xinjun/Xinhua)
Whooper swans are pictured in the national nature reserve for whooper swans in Rongcheng City, east China's Shandong Province, Nov. 28, 2021. (Photo by Li Xinjun/Xinhua)
Whooper swans are pictured in the national nature reserve for whooper swans in Rongcheng City, east China's Shandong Province, Nov. 28, 2021. (Photo by Li Xinjun/Xinhua)
