Liu Guizhen takes a patient's blood pressure at Liangjiadian village, which is a 30-minute walk from her own, in North China's Shanxi Province on June 13, 2017. (Photo/Xinhua)
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Liu Guizhen takes a patient's blood pressure at Liangjiadian village, which is a 30-minute walk from her own, in North China's Shanxi Province on June 13, 2017. (Photo/Xinhua)