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Children of Gaoliangjian Primary School give a performance in Huai'an City, east China's Jiangsu Province, June 1, 2018. Various activities were held across China to celebrate the International Children's Day. (Xinhua/Wan Zhen)

Children of Gaoliangjian Primary School give a performance in Huai'an City, east China's Jiangsu Province, June 1, 2018. Various activities were held across China to celebrate the International Children's Day. (Xinhua/Wan Zhen)