A medical worker guides citizens to do nucleic acid test for the prevention of COVID-19 pandemic in Suifenhe City, northeast China's Heilongjiang Province, Dec. 11, 2020. (Xinhua/Xu Kaixin)
Xinhua pictures of the year 2020: China's fight against COVID-19
Source: Xinhua| 2021-01-06 14:49:22|Editor: huaxia
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