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Students use waste to make handicraft at class at a primary school of Hengshui City, north China's Hebei Province, Oct. 31, 2017. (Xinhua/Zhu Xudong)
Students use waste to make handicraft at class at a primary school of Hengshui City, north China's Hebei Province, Oct. 31, 2017. (Xinhua/Zhu Xudong)