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A chimpanzee feeds on a piece of frozen watermelon to cool off from summer heat waves at Chongqing Zoo in southwest China's Chongqing, July 13, 2018. (Xinhua/Tang Yi)
A chimpanzee feeds on a piece of frozen watermelon to cool off from summer heat waves at Chongqing Zoo in southwest China's Chongqing, July 13, 2018. (Xinhua/Tang Yi)