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Citizens and tourists appreciate the musical fountain at the architecture and art square in Harbin, capital of northeast China's Heilongjiang Province, Aug. 2, 2019. (Xinhua/Wang Jianwei)

Citizens and tourists appreciate the musical fountain at the architecture and art square in Harbin, capital of northeast China's Heilongjiang Province, Aug. 2, 2019. (Xinhua/Wang Jianwei)