This combination photo taken on July 21, 2016 (up) and Nov. 17, 2016 shows the summer and winter scenery at the Tai'erzhuang Canal Wetland Park in Zaozhuang City, east China's Shandong Province. (Photo/Xinhua)
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This combination photo taken on July 21, 2016 (up) and Nov. 17, 2016 shows the summer and winter scenery at the Tai'erzhuang Canal Wetland Park in Zaozhuang City, east China's Shandong Province. (Photo/Xinhua)