Swans arrive in Gansu's Heihe River wetlands
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Dozens of white swans recently found their way to the Heihe River wetlands in Zhangye, Gansu province, creating lovely scenes of graceful beauty. The swans migrated there to find food to spend the winter. With ongoing environmental improvement in the wetlands, the number of swans has been rising steadily.
Zhou Jiaxin contributed to the story.