Swans forage in Hongcun village, Bajiazi township, Beipiao of Northeast China's Liaoning province, Feb 21, 2023. Thanks to the improvement of water quality and people's awareness of animal protection, the number of swans overwintering here has increased from over 40 to more than 400 since 2011. And the swans also attract tourists to the river bank.[Photo/Xinhua]
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