Teachers of Donghai County experimental primary school's Xishuanghu campus deliver textbooks for the new semester in Donghai County, east China's Jiangsu Province, Feb. 24, 2018. (Xinhua/Zhang Kaihu)
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Teachers of Donghai County experimental primary school's Xishuanghu campus deliver textbooks for the new semester in Donghai County, east China's Jiangsu Province, Feb. 24, 2018. (Xinhua/Zhang Kaihu)