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Birds are seen on a willow tree at a park in Baokang County in Xiangyang, central China's Hubei Province, March 12, 2019. (Xinhua/Yang Tao)
Birds are seen on a willow tree at a park in Baokang County in Xiangyang, central China's Hubei Province, March 12, 2019. (Xinhua/Yang Tao)