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
Aerial photo taken on Aug. 1, 2019 shows scenery of the tidal flat wetland along the Songhua River running through Harbin, northeast China's Heilongjiang Province. (Xinhua/Wang Jianwei)
Aerial photo taken on Aug. 1, 2019 shows scenery of the tidal flat wetland along the Songhua River running through Harbin, northeast China's Heilongjiang Province. (Xinhua/Wang Jianwei)