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Photo taken on March 13, 2019 shows a farmer working in fields at Yanshankou Village of Tangzitou Township in Tangshan, north China's Hebei Province. (Xinhua/Liu Mancang)
Photo taken on March 13, 2019 shows a farmer working in fields at Yanshankou Village of Tangzitou Township in Tangshan, north China's Hebei Province. (Xinhua/Liu Mancang)