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Pupils learn 3D printing at Chengguan No. 1 Primary School in Danzhai County, southwest China's Guizhou Province, April 13, 2018. Interest classes are designed to enrich the school life of pupils here. (Xinhua/Huang Xiaohai)
Pupils learn 3D printing at Chengguan No. 1 Primary School in Danzhai County, southwest China's Guizhou Province, April 13, 2018. Interest classes are designed to enrich the school life of pupils here. (Xinhua/Huang Xiaohai)