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Pupils learn to recognize grains in an activity held for the World Food Day at Qiaoxi Foreign Language Primary School in Shijiazhuang, capital of north China's Hebei Province, Oct. 16, 2019. (Xinhua/Wang Xiao)
Pupils learn to recognize grains in an activity held for the World Food Day at Qiaoxi Foreign Language Primary School in Shijiazhuang, capital of north China's Hebei Province, Oct. 16, 2019. (Xinhua/Wang Xiao)